What is the name of LiBr and what is the charge of the cation (indicate the number and - or +)?​

Answers

Answer 1

The name of LiBr is lithium bromate and the charge of the cation (K) is +.

What is a cation?

A cation is a positively charged ion, i.e. one that would be attracted to the cathode in electrolysis. The opposite of a cation is an anion.

Cations and anions make up an ionic compound and determine the charge on the compound. For example, an ionic compound; Lithium bromate is given in this question.

Lithium bromate is made up of Lithium (Li+) as the cation and chlorine (Cl-) as the anion.

Learn more about cations at: https://brainly.com/question/1626694

#SPJ1


Related Questions

A teacher divides her class into groups and assigns each group the task of measuring the mass of the samer object three times the teacher already knoes that the mass of the object is 25 g

Answers

Dividing the class into groups and assigning them the task of measuring the mass of the same object multiple times promotes scientific inquiry, encourages critical thinking.

It also provides an opportunity to discuss the concepts of precision, accuracy, and the role of statistical analysis in scientific investigations.

When the teacher divides her class into groups and assigns each group the task of measuring the mass of the same object three times, it allows for multiple measurements to be taken in order to obtain more accurate and reliable results. This approach is a common practice in scientific experiments and data collection.

By having multiple groups perform the measurements, several factors come into play:

1. Precision: Each group's measurements may have some inherent variability due to factors such as the sensitivity of the measuring instrument, human error, or slight variations in the experimental conditions. Taking multiple measurements allows for better assessment of the precision of the measurements by evaluating the spread or range of values obtained.

2. Accuracy: While the teacher already knows the mass of the object is 25 g, the purpose of the exercise is to assess the accuracy of the measurements performed by the students. By comparing the measured values from each group to the known value, the teacher can evaluate the accuracy of the measurements and identify any systematic errors or biases.

3. Averaging: Taking multiple measurements allows for the calculation of an average value, which tends to be a more reliable representation of the true value. By averaging the measurements from all the groups, the teacher can obtain a more accurate estimate of the mass of the object.

4. Statistical Analysis: With multiple measurements, the teacher can perform statistical analysis on the data, such as calculating measures of central tendency (mean, median) and measures of dispersion (standard deviation), to further assess the quality and reliability of the measurements.

Overall, dividing the class into groups and assigning them the task of measuring the mass of the same object multiple times promotes scientific inquiry, encourages critical thinking, and helps students understand the importance of repeated measurements in obtaining accurate and reliable data. It also provides an opportunity to discuss the concepts of precision, accuracy, and the role of statistical analysis in scientific investigations.

For more such question on mass visit

https://brainly.com/question/24191825

#SPJ8

MgCl2 + 2 NaOH → 2 NaCl + Mg(OH)2

If you want to produce 11.00 moles of MgCl2, how many grams of NaOH are needed for the reaction to take place ?

Answers

To produce 11.00 moles of MgCl2, you would need 858.00 grams of NaOH.

To determine the amount of NaOH needed to produce 11.00 moles of MgCl2, we need to use stoichiometry and the balanced chemical equation:

[tex]MgCl_2 + 2 NaOH[/tex] → [tex]2 NaCl + Mg(OH)_2[/tex]

From the balanced equation, we can see that the mole ratio between [tex]MgCl_2[/tex]and NaOH is 1:2.

Therefore, for every 1 mole of[tex]MgCl_2[/tex], we need 2 moles of NaOH.

Given: Moles of [tex]MgCl_2[/tex]= 11.00 moles

Using the mole ratio, we can calculate the moles of NaOH required:

moles of NaOH = 2 * moles of MgCl2

moles of NaOH = 2 * 11.00 moles

moles of NaOH = 22.00 moles

Now, we need to convert the moles of NaOH to grams using the molar mass of NaOH:

The molar mass of NaOH = 22.99 g/mol + 16.00 g/mol + 1.01 g/mol = 39.00 g/mol

grams of NaOH = moles of NaOH * molar mass of NaOH

grams of NaOH = 22.00 moles * 39.00 g/mol

grams of NaOH = 858.00 grams

Therefore, to produce 11.00 moles of [tex]MgCl_2[/tex], you would need 858.00 grams of NaOH.

Know more about   molar mass   here:

https://brainly.com/question/837939

#SPJ8

A teacher showed this animal to studenst on a field trip

Answers

If a teacher showed an animal to students on a field trip. The  tool will allow the students to best see the animal up close is the hand lens.

Option D is correct.

What is a  Hand lens?

A hand lens is known as a magnifying glass  which is a convex lens that is used to produce a magnified image of an object. The lens is usually mounted in a frame with a handle.

A hand lens  has two essential properties which are its focal length and its diameter.

The students will therefore require a hand lens to look up the animal close.

Learn more about hand lens at:https://brainly.com/question/12027484

#SPJ1

#complete question:

A teacher showed this animal to students on a field trip. Which tool will allow the students to best see the animal up close? O A Tape measure O B Graduated cylinder O c. Notebook O D. Hand lens


What is the limiting reactant and theoretical yield if 60 g Al react with 80 g of Cl2 and produce aluminum chloride?

Answers

Taking into account definition of theoretical yield, Cl₂ is the limiting reagent and the theoretical yield is 100.31 grams of AlCl₃ if 60 g Al react with 80 g of Cl₂ and produce aluminum chloride

Reaction stoichiometry

In first place, the balanced reaction is:

2 Al + 3 Cl₂ → 2 AlCl₃

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

Al: 2 molesCl₂: 3 molesAlCl₃: 2 moles

The molar mass of the compounds is:

Al: 27 g/moleCl₂: 70.9 g/moleAlCl₃: 133.35 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

Al: 2 moles×27 g/mole= 54 gramsCl₂: 3 moles ×70.9 g/mole= 212.7 gramsAlCl₃: 2 moles ×133.35 g/mole= 266.7 grams

Limiting reagent

The limiting reagent is one that is consumed first in its entirety, determining the amount of product in the reaction.

To determine the limiting reagent, it is possible to use a rule of three as follows: if by stoichiometry 54 grams of Al reacts with 212.7 grams of Cl₂, 60 grams of Al reacts with how much mass of Cl₂?

mass of Cl₂= (60 grams of Al× 212.7 grams of Cl₂)÷54 grams of Al

mass of Cl₂= 236.33 grams

But 236.33 grams of Cl₂ are not available, 80 grams are available. Since you have less mass than you need to react with 60 grams of Al, Cl₂ will be the limiting reagent.

Theoretical yield

The theoretical yield is the amount of product acquired through the complete conversion of all reagents in the final product, that is, it is the maximum amount of product that could be formed from the given amounts of reagents.

Considering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 212.7 grams of Cl₂ form 266.7 grams of AlCl₃, 80 grams of Cl₂ form how much mass of AlCl₃?

mass of AlCl₃= (80 grams of Cl₂×266.7 grams of AlCl₃)÷212.7 grams of Cl₂

mass of AlCl₃= 100.31 grams

Finally, the theoretical yield is 100.31 grams of AlCl₃.

Learn more about the reaction stoichiometry:

brainly.com/question/24741074

#SPJ1

How many molecules of. C6H1206 are needed to produce 18 molecules of co2

A.3

B.9

C.12

D.18

Answers

Answer: A : 3

Explanation: 18 CO2 / 6 CO2 = 3 C6H12O6

Answer:

A = 3.

Explanation:

Here is how:

To determine the number of molecules of C6H12O6 (glucose) needed to produce 18 molecules of CO2, we need to consider the balanced chemical equation for the complete combustion of glucose:

C6H12O6 + 6O2 -> 6CO2 + 6H2O

From the balanced equation, we can see that 1 molecule of glucose (C6H12O6) produces 6 molecules of CO2. Therefore, we can set up a proportion to find the number of glucose molecules needed:

1 molecule of glucose produces 6 molecules of CO2

x molecules of glucose produce 18 molecules of CO2

Using the proportion:

1/6 = x/18

To solve for x, we can cross-multiply:

6x = 18

Dividing both sides by 6:

x = 3

Therefore, 3 molecules of C6H12O6 are needed to produce 18 molecules of CO2.

Identify the type of reaction and predict the product: Calcium + water -->

Answers

Answer:

Exothermic Reaction

Product  = Calcium hydroxide + hydrogen

Explanation:


I need help with budgeting someone who works as a Master Business Administrator but it’s entrepreneurship I need help with the Gross annual salary then I have to subtract the federal tax by 19%
Basically multiply gross annual salary by .19 then subtract the amount

Subtract the tax of 11%
Subtract THE fICA tax of 8%
Multiple the gross jayla salary by .08 then subtract the amount
Then I have to find the NEt Annual Salary
then it says mutual the monthly net income then divide the net annual salary by 12

Then I have to find the monthly expense of being a MBA (entrepreneur)
Like mortgage for mortgage I have to go to Zillow and ask for my “debts” this would be any credit card debt , student loans, car payments etc then I have to find utilities, cable , internet , cell phone , car pay , student loans , groceries , car gasoline , health insurance, auto insurance,home insurance, entertainment, hair cuts /nails /beauty , Gym membership , clothes , gifts , vacation fund I have to multiply my month net income by 0.1 to find all these it all depends on how much I make and last but not least I have to find the projected monthly expense

IF YOU can help with me all of these I will sure to mark you BRAINLIEST

Answers

I can give you a general approach to budgeting based on the guidelines you provided.

First, let's assume that the gross annual salary of the MBA entrepreneur is $100,000.

Federal Tax:

19% of $100,000 = $19,000

Net Salary:

$100,000 - $19,000 = $81,000

State Tax:

Assuming the state tax rate is 11%:

11% of $81,000 = $8,910

Net Salary:

$81,000 - $8,910 = $72,090

FICA Tax:

Assuming the FICA tax rate is 8%:

8% of $81,000 = $6,480

Net Salary:

$81,000 - $6,480 = $74,520

Monthly Net Income:

$74,520 divided by 12 = $6,210

Monthly Expenses:

Assuming a debt of $1,000 per month (credit card/student loans/car payments),

Utilities: $150

Cable and Internet: $100

Cell Phone: $50

Car Payment: $400

Groceries: $400

Car Gasoline: $150

Health Insurance: $400

Auto Insurance: $150

Home Insurance: $100

Entertainment: $200

Haircuts/Nails/Beauty: $100

Gym Membership: $50

Clothes: $100

Gifts: $100

Vacation Fund: $200

Total Monthly Expenses:

$2,900

Projected Monthly Expense:

10% of $6,210 = $621

Note that this is just an example, and your budget may differ depending on your specific circumstances and location. It's essential to track your actual expenses carefully to make sure you're sticking to your budget and adjusting it as needed.

Answer:

I apologize if this is not what you wanted! If you want a different answer or would like me to change it please let me know :)

Explanation:

For housing, I should be spending no more than 30% of my monthly net income. This includes rent, mortgage payments, and utilities. For transportation, I should be spending no more than 15% of my monthly net income. This includes car payments, gas, and insurance. For food, I should be spending no more than 10% of my monthly net income. This includes groceries and eating out. For savings, I should be spending no more than 10% of my monthly net income. This includes retirement savings, emergency funds, and other investments. For debt payments, I should be spending no more than 10% of my monthly net income. This includes student loans, credit cards, and other debts. For entertainment, I should be spending no more than 5% of my monthly net income. This includes movies, concerts, and other leisure activities.

In addition to these categories, I may also need to budget for other expenses. This could include medical bills, clothing, and other miscellaneous expenses. It is important to remember that these percentages are just guidelines and may need to be adjusted depending on my individual situation.

Scenario : I would like to save for a new cell phone which variable expense can I cut back ? How much should I save for a month on the phone?

If I would like to save for a new cell phone, I can cut back on my variable expenses. I can reduce my spending on entertainment, clothing, and miscellaneous expenses. I should aim to save at least 5% of my net annual salary for a new cell phone. This would be approximately $1,000 per year, or $83.33 per month.

id k what to do for the other two, but i hope this helps you! :))))))

How many formula units are in 50.0g of Pb02?

Answers

There are approximately [tex]1.258 x 10^2^3[/tex] formula units in 50.0 g of PbO2.

To solve this problem

We must utilize the molar mass of PbO2 (lead dioxide) and the idea of Avogadro's number to calculate the number of formula units in a given mass of PbO2.

The molar mass of PbO2 is calculated as follows:

1 atom of Pb (lead) has a molar mass of approximately 207.2 g/mol.

2 atoms of O (oxygen) have a combined molar mass of approximately 32.0 g/mol (16.0 g/mol per oxygen atom).

Therefore, the molar mass of PbO2 is:

Molar mass of PbO2 = (1 * molar mass of Pb) + (2 * molar mass of O)

= (1 * 207.2 g/mol) + (2 * 16.0 g/mol)

= 207.2 g/mol + 32.0 g/mol

= 239.2 g/mol

Now, we can use the molar mass to determine the number of formula units in 50.0 g of PbO2.

Number of moles = Mass (in grams) / Molar mass

= 50.0 g / 239.2 g/mol

≈ 0.209 moles (rounded to three decimal places)

Since 1 mole of any substance contains Avogadro's number of particles [tex](approximately 6.022 x 10^2^3),[/tex]we can calculate the number of formula units by multiplying the number of moles by Avogadro's number:

Number of formula units = Number of moles * Avogadro's number

[tex]= 0.209 moles * (6.022 x 10^2^3 formula units/mole)[/tex]

≈[tex]1.258 x 10^2^3 formula units[/tex]

Therefore, there are approximately[tex]1.258 x 10^2^3[/tex] formula units in 50.0 g of PbO2.

Learn more about molar mass here : brainly.com/question/21334167

#SPJ1

Determine the grams of potassium chloride produced when 505 grams of potassium
phosphate react with 222 grams of HCI. Refer to the balanced equation below.
K3PO4 (aq) + 3HCI (aq) --> 3KCI (1) + H3PO4 (aq) (balanced)

Answers

Answer:  505 grams K3PO4 x (3 x 222 grams HCI)/ (3 x K3PO4) = 555.5 grams KCl

Explanation:

based on table g what is the mass of kcl that must be dissolved in 200 grams of H2O at 10 c to make a saturated solution

Answers

Based on Table G, the mass of KCl that must be dissolved in 200 grams of H₂O at 10 °C to make a saturated solution is 60 g.

What is the mass of KCl that must be dissolved?

Based on Table G, the solubility of KCl at 10°C is given as 30 g/100 g water.

To calculate the mass of KCl that can be dissolved in 200 grams of water at 10°C, we can set up a proportion:

(30 g KCl / 100 g water) = (x g KCl / 200 g water)

Cross-multiplying and solving for x, we get:

x g KCl = (30 g KCl / 100 g water) * (200 g water)

x g KCl = 60 g KCl

Learn more about solubility at: https://brainly.com/question/24057916

#SPJ1

How much energy does the water in this
experiment absorb according to the
calorimeter data?
Calorimeter Data
Mass (g)
100.0
Specific heat (J/g°C) 4.18
21.2
46.2
T₁ (J/g°C)
T, (J/g°C)
qH₂O [?] J
=

Answers

As per the data given in the question, the water in this experiment absorbs approximately 10450 joules (J) of energy according to the calorimeter data.

To determine the amount of energy absorbed by the water in the experiment (qH₂O), we need to use the formula:

qH₂O = m × c × ΔT

where:

qH₂O represents the energy absorbed by the water (in joules, J),

m is the mass of the water (in grams, g),

c is the specific heat capacity of water (in J/g°C), and

ΔT is the change in temperature of the water (in °C).

From the provided calorimeter data, we have:

Mass of the water (m) = 100.0 g

Specific heat capacity of water (c) = 4.18 J/g°C

Initial temperature (T₁) = 21.2 °C

Final temperature (T₂) = 46.2 °C

To calculate ΔT, we use the formula: ΔT = T₂ - T₁

ΔT = 46.2 °C - 21.2 °C = 25 °C

Now we can substitute the values into the formula for qH₂O:

qH₂O = (100.0 g) × (4.18 J/g°C) × (25 °C)

qH₂O ≈ 10450 J

Therefore, the water in this experiment absorbs approximately 10450 joules (J) of energy according to the calorimeter data.

For more details regarding specific heat, visit:

https://brainly.com/question/31608647

#SPJ1

A block of wood has a mass of 450. g. When dropped into a graduated cylinder, the water level rises from 4.50 mL to 16.22 mL. What is the density of the block in g/mL?

Answers

The density of the block of wood is approximately 38.40 g/mL.

To calculate the density of the block of wood, we need to use the formula:

Density = Mass / Volume

First, let's convert the mass of the block from grams (g) to milliliters (mL). Since the density is expressed in g/mL, the mass and volume need to have the same units.

Given:

Mass of the block = 450 g

Change in water level = 16.22 mL - 4.50 mL = 11.72 mL

Density = 450 g / 11.72 mL

Calculating the density:

Density ≈ 38.40 g/mL

Therefore, the density of the block of wood is approximately 38.40 g/mL.

The density of a substance represents its mass per unit volume. In this case, the mass of the block of wood is 450 g, and the volume is determined by the change in water level when the block is dropped into the graduated cylinder. By subtracting the initial water level (4.50 mL) from the final water level (16.22 mL), we find that the block occupies a volume of 11.72 mL. Dividing the mass by the volume gives us the density of the block, expressed in grams per milliliter.

It's important to note that the density of wood can vary depending on factors such as the type of wood and its moisture content. The value calculated here represents the density of the specific block used in the given scenario.

For more such question on density visit

https://brainly.com/question/26364788

#SPJ8

If you know the answer tell me please

Answers

Metamorphic rocks can be harder, less porous, and have crystals that can be lined, describing some of the ways in which metamorphic rocks differ from sedimentary rocks.

There are two different types of rocks: sedimentary rocks and metamorphic rocks. Igneous or sedimentary pre-existing rocks undergo changes under extreme heat and pressure to form metamorphic rocks. This process results in the recrystallization of minerals, leading to the formation of a new rock with distinct physical and chemical characteristics.

Therefore, the correct option is B.

Learn more about Metamorphic rocks, here:

https://brainly.com/question/19930528

#SPJ1

What is the structure of an atom.

Answers

Answer:

An atom contains three basic particles namely protons, neutrons and electrons. The nucleus of the atom contains protons and neutrons where protons are positively charged and neutrons are neutral. The electrons are located at the outermost regions called the electron shell.

C2N2H8 empirical formula

Answers

Answer:

[tex]\huge\boxed{\sf CNH_4}[/tex]

Explanation:

Empirical formula:The simplest whole number ratio of atoms in a compound is known as empirical formula.Solution:

Given compound us,

C₂N₂H₈

Ratio:

= 2 : 2 : 8

Divide by 2

= 2 ÷ 2 : 2 ÷ 2 : 8 ÷ 2

= 1 : 1 : 4

So, we can write the formula as:

= CNH₄

[tex]\rule[225]{225}{2}[/tex]

__Fe+__Pb(No3)3+__Pb
If 30.0 g of iron react with 258 g lead (Il) nitrate and 67.8 grams of lead form, what is the percent yield?

Answers

When 30.0 g of iron reacts with 258 g lead (Il) nitrate and 67.8 grams of lead form, then the percentage yield is 40.62%.

Given information,

Mass of iron = 30g

Mass of Lead (III) nitrate = 258g

Mass of lead = 67.8g

The balanced equation for the reaction is:

2 Fe + 3 Pb(NO₃)₂ → 3 Pb + 2 Fe(NO₃)₃

The stoichiometric ratio between iron (Fe) and lead (Pb) is 2:3.

The moles of Fe:

Moles of Fe = mass of Fe / molar mass of Fe

Moles of Fe = 30.0/ 55.845

Moles of Pb = (3/2) × moles of Fe

The theoretical yield of Pb:

Mass of Pb (theoretical) = moles of Pb × molar mass of Pb

Mass of Pb (theoretical) = (3/2) × moles of Fe × molar mass of Pb

The percent yield:

Percent yield = (actual yield / theoretical yield) × 100

Actual yield = 67.8 g

Theoretical yield = (3/2) × (30/55.845) × 207.2 = 166.95

Percent yield = 67.8/166.9  × 100 = 40.62%

Thus, the percentage yield is 40.62%.

Learn more about percentage yield, here:

https://brainly.com/question/29200507

#SPJ1

A student sees 3.0 M HCI on the shelf. What does this mean about the solution? How many moles would be in 4 L of this solution?

Answers

answer

To determine the number of moles in 4 liters of this solution, you can use the formula:

moles = concentration (M) x volume (L)

Substituting the given values:

moles = 3.0 M x 4 L

moles = 12 moles

Therefore, there would be 12 moles of HCl in 4 liters of the 3.0 M HCl solution.

where do earthquakes most likely occur?

Answers

Earthquakes most likely occur along tectonic plate boundaries. The Earth's lithosphere is divided into several large tectonic plates that constantly move and interact with each other. The boundaries where these plates meet are the most common locations for earthquakes. There are three main types of plate boundaries:

Convergent Boundaries: These occur where two tectonic plates collide or move toward each other. Depending on the type of crust involved, convergent boundaries can result in subduction zones, where one plate is forced beneath the other, or in the collision of two plates. Earthquakes at convergent boundaries can be very powerful and are often associated with volcanic activity.
Divergent Boundaries: These occur where two tectonic plates move away from each other. As the plates separate, magma rises from the mantle to fill the gap, creating new crust. Earthquakes at divergent boundaries tend to be relatively moderate in magnitude.
Transform Boundaries: These occur where two tectonic plates slide past each other horizontally. Transform boundaries are characterized by intense shear stress, and earthquakes at these boundaries can be particularly strong.
It is important to note that earthquakes can also occur within plates, although they are less common. These intra-plate earthquakes typically happen along pre-existing faults within the plate, or they may be induced by human activities such as mining or hydraulic fracturing (fracking).

Overall, the majority of earthquakes occur along plate boundaries, making these areas the most likely locations for seismic activity.

A 0.210 g gas sample has a pressure of 432 torr in a 333 mL container at 23 C. What is the molar mass of the gas?

Answers

The molar mass of the gas is approximately 20.72 g/mol.

To determine the molar mass of the gas, we can use the ideal gas law equation:

PV = nRT

where:

P = pressure (in atm)

V = volume (in liters)

n = number of moles

R = ideal gas constant (0.0821 L·atm/(mol·K))

T = temperature (in Kelvin)

First, let's convert the given values to the appropriate units:

Pressure = 432 torr = 432/760 atm

Volume = 333 mL = 333/1000 L

Temperature = 23°C = 23 + 273.15 K

Substituting the values into the ideal gas law equation:

(432/760) atm * (333/1000) L = n * 0.0821 L·atm/(mol·K) * (23 + 273.15) K

Simplifying the equation:

0.191 atm * 0.333 L = n * 0.0821 L·atm/(mol·K) * 296.15 K

Solving for the number of moles (n):

n = (0.191 atm * 0.333 L) / (0.0821 L·atm/(mol·K) * 296.15 K)

n ≈ 0.01012 moles

Finally, we can calculate the molar mass using the formula:

Molar mass = mass of the gas sample / moles of gas

Molar mass = 0.210 g / 0.01012 moles

Molar mass ≈ 20.72 g/mol

For more questions on molar mass

https://brainly.com/question/837939

#SPJ8

I need help in this:(

Answers

Answer:

Phosphorus(P) and Oxygen(O)=Covalent bond

Chlorine(Cl) and Sodium(Na) = Ionic bond

Silver (Ag) and Silver (Ag)= Metallic bond

Silver (Ag) and silver (Ag) metallic bonding

Phosphorus and Oxygen would be covalent bonding

Chlorine and sodium would be ionic bonding.

Calculate the mass percent by
volume of 281.1 g of glucose
(C6H12O6, MM = 180.2 g/mol) in
325 mL of solution.

Answers

Answer:

Given:

Mass of glucose (m) = 281.1 g

Molar mass of glucose (MM) = 180.2 g/mol

Volume of solution (V) = 325 mL

First, let's convert the volume of the solution from milliliters (mL) to liters (L):

V = 325 mL = 325/1000 L = 0.325 L

Next, we can calculate the mass of glucose in the solution using its molar mass and the given mass:

moles of glucose (n) = m / MM

n = 281.1 g / 180.2 g/mol

Now, we need to calculate the mass percent by volume:

mass percent by volume = (mass of glucose / mass of solution) x 100

mass of solution = mass of glucose

mass percent by volume = (mass of glucose / mass of solution) x 100

= (n x MM / V) x 100

Substituting the values:

mass percent by volume = ((281.1 g / 180.2 g/mol) x 180.2 g/mol) / 0.325 L) x 100

Calculating this expression will give us the mass percent by volume of glucose in the solution.

Cr3+3e=Cr is that a reduction or oxidation

Answers

The chromium ions with a +3 oxidation state are reduced to chromium atoms with an oxidation state of 0.The reduction of Cr^3+ to Cr in this chemical equation is an example of a reduction reaction.

The chemical equation Cr^3+ + 3e^- = Cr represents the reduction of chromium ions (Cr^3+) to elemental chromium (Cr). In this reaction, the chromium ions gain three electrons to form neutral chromium atoms. Reduction reactions involve the gain of electrons and a decrease in the oxidation state of an element.

During the reduction process, the chromium ions are undergoing a change in their electronic configuration, gaining three electrons to achieve a stable configuration. This reduction reaction typically occurs in the presence of a reducing agent that donates electrons, allowing the chromium ions to be reduced. By gaining three electrons, the chromium ions are reduced to their elemental form, which has a neutral charge and an oxidation state of 0.

For more such questions on Reduction reaction

https://brainly.com/question/21851295

#SPJ8

What is the freezing point, in °C, of
a 0.66 m solution of C4H10 in
benzene?
FP (benzene) = 5.50 °C
K; (benzene) = 5.12 °C/m
[?] °C

Answers

The freezing point of a 0.66 m solution of  [tex]C_4H_{10[/tex]  in benzene is approximately 2.1208 °C.

To calculate the freezing point of a solution we can use the below formula

ΔT = K * m

where ΔTthe change in freezing point, K is the cryoscopic constant, and m is the molality of the solution.

Given:

Freezing point of benzene = 5.50 °C

Cryoscopic constant of benzene  = 5.12 °C/m

Molality of the solution= 0.66 m

Substituting the values into the formula:

ΔT = 5.12 °C/m * 0.66 m

Calculating the value:

ΔT = 3.3792 °C

We have to subtract the calculated change in freezing point from the freezing point of pure benzene to find the freezing point of the solution

The freezing point of solution = Freezing point (benzene) - ΔT

Freezing point of solution = 5.50 °C - 3.3792 °C

Calculating the value:

Freezing point of solution = 2.1208 °C

Therefore, the freezing point of a 0.66 m solution of [tex]C_4H_{10[/tex] in benzene is approximately 2.1208 °C.

To learn more about Molality,

https://brainly.com/question/30640726

can someone please help me on these chemistry true or false ? i’ll give brainliest

Answers

For the following questions:

2. False. The periodic table was first arranged...3. True. The short configuration of Hf is [Xe]...4. False. 150 LX 4.0 moles would equate to a molarity...5. False. A block 1.35 m x 2.467 m = 3.3 m².6. True. The density of an unknown solid weighs...7. True. 2 moles of helium would occupy 50 L...8. False. The empirical formula of a compound...9. True. Multiple compounds...10. False. Stoichiometric calculations...

Why are they so?

2. The periodic table was first arranged by increasing atomic mass. False

The periodic table was first arranged by increasing atomic number. This was done by Dmitri Mendeleev in 1869.

3. The short configuration of Hf is [Xe] 6s2 4f14 5s1. True

The short configuration of Hf is [Xe] 6s2 4f14 5s1. This is because Hf has 72 electrons, and the electron configuration of Xe is [Kr] 5s2 4d10 5p6. So, the electron configuration of Hf can be written as [Xe] 6s2 4f14 5s1.

4. 150 LX 4.0 moles would equate to a molarity of 0.0266 mol/L. False

Molarity is defined as the moles of solute per liter of solution. So, to calculate the molarity of a solution, we need to divide the moles of solute by the volume of solution in liters. In this case, we have 150 L of solution and 4.0 moles of solute. So, the molarity of the solution is 4.0 moles / 150 L = 0.0266 mol/L.

5. A block 1.35 m x 2.467 m = 3.3 m². False

The area of a rectangle is calculated by multiplying the length by the width. So, the area of a block that is 1.35 m long and 2.467 m wide is 1.35 m x 2.467 m = 3.319 m².

6. The density of an unknown solid weighs 3.00 g in 5.0 mL = 0.60 g/mL. True

Density is defined as mass per unit volume. So, to calculate the density of a substance, we need to divide the mass of the substance by the volume of the substance. In this case, we have a solid that weighs 3.00 g and has a volume of 5.0 mL. So, the density of the solid is 3.00 g / 5.0 mL = 0.60 g/mL.

7. 2 moles of helium would occupy 50 L of a balloon filled with it at STP. True

At STP, one mole of any gas occupies 22.4 L. So, two moles of helium would occupy 2 x 22.4 L = 44.8 L.

8. The empirical formula of a compound is half of the molecular? False

The empirical formula of a compound is the simplest whole-number ratio of the atoms in the compound. The molecular formula of a compound is the actual number of atoms in the compound. So, the empirical formula of a compound is not necessarily half of the molecular formula.

9. Multiple compounds can have the same empirical formulas? True

Multiple compounds can have the same empirical formulas. For example, the empirical formula of methane, ethane, and propane are all CH₃. However, the molecular formulas of methane, ethane, and propane are CH₄, C₂H₆, and C₃H₈, respectively.

10. Stoichiometric calculations can only be achieved by converting to moles? False

Stoichiometric calculations can be achieved by converting to moles, but they can also be achieved by using other units, such as grams or liters.

Find out more on stoichiometry here: https://brainly.com/question/14935523

#SPJ1

ASAP PLEASE!!!B. Complete the drawing for the sample reaction below to show the law of conservation of
mass, when XY is produced.
+
->

Answers

The complete reaction, according to the law of conservation of mass is:

XX + YY → 2XY

The Law of Conservation is a fundamental principle in chemistry and physics. It states that in a closed system, mass cannot be created or destroyed during a chemical reaction or a physical change. The total mass of the substances involved before the reaction or change must equal the total mass of the substances after the reaction or change.

This principle is based on the understanding that atoms are not created or destroyed, but they can combine or separate to form different substances.

Learn more about the law of mass conservation, here:

https://brainly.com/question/28711001

#SPJ1

What is happening in the picture?


A)
Sunlight is reacting with waste gases produced by cellular respiration from the trees to produce chemical smog.


B)
Sunlight is reacting with waste gases produced by cellular respiration from the trees and by vehicles burning fossil fuels to produce chemical smog.


C)
Sunlight is reacting with water vapor produced by vehicles burning fossil fuels to produce photochemical smog.


D)
Sunlight is reacting with waste gases produced by vehicles burning fossil fuels to produce photochemical smog.

Answers

The most likely option based on common knowledge is sunlight is reacting with waste gases produced by vehicles burning fossil fuels to produce photochemical smog.

Photochemical smog is a type of air pollution that is formed when sunlight reacts with pollutants released from vehicle exhaust and other sources, such as industrial emissions. This reaction produces a mixture of harmful chemicals, including ground-level ozone and various secondary pollutants.

However, it's important to note that a definitive answer would require specific information about the picture in question, as different scenarios may lead to different outcomes.

Learn more about Photochemical smog on:

https://brainly.com/question/27960448

#SPJ1

CHEM FINAL TOMORROW, NEED IMMEDIATE HELP!!! There are a few topics I don't understand, if someone could give a short explanation of how to do these kinds of problems, it would help so much. I'll be posting a few more of these on my page, so feel free to check those out if you would like. Thanks!

Answers

The mass of [tex]O_2[/tex] needed to produce 8.65 x [tex]10^{23[/tex] atoms of silver is 22.96 grams.

Stoichiometric calculation

In the given balanced equation, it is stated that 2 moles of [tex]Ag_2O[/tex] produce 4 moles of Ag and 1 mole of [tex]O_2[/tex].

First, let's calculate the number of moles of Ag:

8.65 x [tex]10^{23[/tex] atoms of Ag / (6.022 x [tex]10^{23[/tex] atoms/mol) = 1.435 moles of Ag

Since 2 moles of  [tex]Ag_2O[/tex] produce 1 mole of  [tex]O_2[/tex], the number of moles of  [tex]O_2[/tex] needed is half of the moles of  [tex]Ag_2O[/tex].

Number of moles of  [tex]O_2[/tex]= 1.435 moles of  [tex]Ag_2O[/tex] / 2 = 0.7175 moles

Now, we'll use the molar mass of  [tex]O_2[/tex] to find the mass:

Molar mass = 32.00 g/mol

Mass of  [tex]O_2[/tex] = number of moles × molar mass

                   = 0.7175 moles × 32.00 g/mol = 22.96 g

Therefore, the mass of  [tex]O_2[/tex] needed to produce 8.65 x [tex]10^{23[/tex] atoms of silver is 22.96 grams.

More on stoichiometric calculations can be found here: https://brainly.com/question/27287858

#SPJ1

help with this question pls

Answers

The addition of a catalyst to this reaction would cause a change in "I" indicated energy differences.

If a catalyst is added to a reaction, it typically affects the activation energy (Ea) of the reaction. The activation energy is the energy barrier that needs to be overcome for the reaction to proceed.

In the context of the energy diagram for the reaction X + Y -> Z, the addition of a catalyst would primarily affect the energy difference related to the activation energy. Let's consider the options:

It is generally expected that the addition of a catalyst would primarily affect the activation energy (Ea) of the reaction, which is typically associated with the energy difference labeled as "I" on energy diagrams.

Therefore, the answer is: I only: The addition of a catalyst would cause a change in the energy difference labeled as "I" on the energy diagram.

For more details regarding catalyst, visit:

https://brainly.com/question/24430084

#SPJ1

CAN SOMEONE PLEASE ANSWER THIS CORRECTLY??


In this activity, you are tasked with designing an airbag for a company that creates airbags for automobiles. You must design the driver’s front airbag for a specific car model so it will protect the driver as effectively as possible. For this car, the airbag must have a volume of 58 liters when fully inflated. To provide an adequate cushion for the driver’s head, the air pressure inside the airbag should be 4.4 psi. This pressure value is in addition to the normal atmospheric pressure of 14.7 psi, giving a total absolute pressure of 19.1 psi, which equals 1.30 atmospheres.


One of the main components of an airbag is the gas that fills it. As part of the design process, you need to determine the exact amount of nitrogen that should be produced. Calculate the number of moles of nitrogen required to fill the airbag. Show your work. Assume that the nitrogen produced by the chemical reaction is at a temperature of 495°C and that nitrogen gas behaves like an ideal gas. Use this fact sheet to review the ideal gas law.

Answers

First, we need to calculate the number of liters stored in the airbag (V). This can be done using the formula:

V = (P * n * R * T) / (Ptot)

V = (4.4 psi * n * 0.08206 Latm/mol·K * 495K) / (19.1 psi)

V = (0.08206 Latm/mol·K * 495K) / (1.3 atm)

V = 58.8 liters

Next, we need to calculate the number of moles of nitrogen needed to fill the airbag (n). This can be done using the formula:

n = (V * Ptotal) / (R * T)

n = (58.8 liters * 19.1 psi) / (0.08206 Latm/mol·K * 495K)

n = 0.135 moles of nitrogen needed to fill the airbag.

CHEM FINAL TOMORROW!!! Really need help understanding a few topics, if anyone could explain this to me it would help a lot!!!

Answers

Answer:

[tex]\large \textsf{If the Keq of a reaction is 4$\times$10$^{-7}$, then:}\\\\\large \textsf{$\implies$ the equilibrium lies slightly to the left.}[/tex]

Equilibrium Constant (Keq)

The position or extent of a chemical equilibrium can be expressed quantitatively using the equilibrium constant (Keq). If the value of Keq is large, then the equilibrium lies to the right (the product side). If the value of Keq is small, then the equilibrium lies to the left (the reactant side).

In terms of sizing, a small value of Keq usually ranges from 10⁻¹⁰ to 10⁻⁵⁰ and beyond. A large value of Keq usually ranges from 10¹⁰ and onwards.

∴ for a Keq of 4×10⁻⁷, we say that the equilibrium lies slightly to the left.

Other Questions
The water in a cylindrical task is 2.4 m high The tank is 3.4 m high with a diameter of 1.8.What is the volume of water needed to fill the tank? A 10 lb particle has forces of F1= (3i + 5j) lb and F2= (-7i + 9j) lb acting on it. Determine the acceleration of the particle. L 02. (10.03 MC) Find a series in the form bn = de that is comparable to an 312 - 4n and determine if a, converges or diverges by the limit comparison test. n=2 n-2n + 3 lim an does not exist, a, di a network administrator notices that the hourly plot of a routers datatraffic varies from hour to hour. what does this information tell the networkadministrator? Compare and contrast Thomas Jefferson's Declaration of Independence with Thomas Paine's pamphlet "Common Sense." Which had the greater effect on revolutionary America? Are these documents still effective today?3 to 4 pages must include a thesis statementuse specific examples cite sources carefully in ritornello form, who will play the ritornello theme? is it the ripieno (same as tutti or full orchestra), or is it the concertino (same as soloists or smaller group)? Develop a random-variate generator for a random variable X with the following PDF and generate 10 variates f(x) = e ^ (- 2x), x >= 0 Expand and simplify (3x+4)(2x+3) in solving from an unknown interest rate involving only the f/p formula, it is possible to solve for i directly by rearranging the equation. TRUE OR FALSE Chapter 1 discusses how to get started with research and the information-seeking process. According to the Chapter, which of the following is important to consider when getting started?a.How much information do you need for your projectb. what types of sources do you need to find or consultc.which finding tools are a good fit for your information you need W O R L D V I E W China Cuts Reserve Requirements With its vast economy showing signs of slower growth, China has opted to encourage more bank lending. Chinas central bank, the Peoples Bank of China, said it is trimming the required reserve ratio for its banks by half a percentage pointto 17 percent, down from 17.5 percent. The lower reserve requirement enables banks to lend more of their reserves. The move is expected to free up about 700 billion yuan ($107 billion) in bank reserves. Source: News reports, February 29, 2016.By how much did the following increase when China cut the reserve requirement:Instructions: Enter your responses as a whole number in United States Dollars ($).a. Excess reserves?$ ____billionb. The lending capacity of the banking system?$____ billionExpert AnswerThis solution was written by a subject matter expert. It's designed to help students like you learn core concepts.a> 107 Excess reserve will fall by $107 billion because the requirement hView the full answeranswer image blur Part completeWhich of these human diseases does an apicomplexan protozoan cause?View Available Hint(s)-typhoid fever-tuberculosis (TB)-malaria-Lyme disease nemployment arising from a persistent mismatch between the skills and characteristics of workers and the requirements of jobs is called . which of the following molecules does not contain an energy rich phosphoanhydride bond? a) adp b) gdp c) amp d) cdp 2. a double stranded dna fragment contains 12% adenine residues. calculate the percentage cytosine residues. a) 12% b) 24% c) 38% d) 50% e) 78% 3. transfer rna molecules are involved in find all relative extrema of the function. use the second derivative test where applicable. (if an answer does not exist, enter dne.) y = x2 log2 x Determine the domain and range of the function f(x) = |x| + 2.The domain of the function is .The range of the function is Let D be the region bounded by the two paraboloids z = 2x + 2y - 4 and z = 5-x - y where x 20 and y 20. Which of the following triple integral in cylindrical coordinates allows us to evaluate the volume of D? 73 5 dzdrd None of these This option 4 r dzdrdo This option O This option f f2 r dzdrde This option find the chi-square value corresponding to a sample size of 17 and a confidence level of 98 percent. .A man sent an email to a friend that stated: "Because you have been a great friend to me, I am going to give you a rare book that I own." The friend replied by an email that said: "Thanks for the rare book. I am going to give you my butterfly collection." The rare book was worth $10,000; the butterfly collection was worth $100. The friend delivered the butterfly collection to the man, but the man refused to deliver the book.If the friend sues the man to recover the value of the book, how should the court rule?A - For the man, because there was no bargained-for exchange to support his promise.B - For the man, because the consideration given for his promise was inadequate.C - For the friend, because she gave the butterfly collection to the man in reliance on receiving the book.D - For the friend, because she conferred a benefit on the man by delivering the butterfly collection. How many times do these four steps repeat to elongate malonylCoA into a 14carbon fatty acid?number of reaction cycles: