which element requires the least amount of energy to remove the outer-most electron from a gaseous atom i the groud state

Answers

Answer 1

The element that requires the least amount of energy to remove the outer-most electron from a gaseous atom in the groud state is Sodium (Na). That is option 3.

What is a ground state of an atom?

A group state of an atom is defined as the level of energy attained by an atom in which all its electrons are in the lowest possible energy levels.

From the periodic table, the elements are arranged in groups and periods according to their atomic mass number.

From the atoms listed, sodium is element that requires the least amount of energy to remove the outer-most electron from a gaseous atom in the groud state.

This is so because of the following reasons:

It had very low nuclear charge,

Small size, and

A negligible shielding effect.

Learn more about elements here:

https://brainly.com/question/28376204

#SPJ1

Complete question

Which Element Requires The Least Amount Of Energy To Remove The Most Loosely Held Electron From A Gaseous Atom In The Ground State?

(1) bromine

(2) calcium

(3) sodium

(4) Silver


Related Questions

Name
Between August 24, 15:00, and August 26, 03:00, the wind speed for
Hurricane Andrew remained essentially the same. Where was
Hurricane Andrew located during this period of time?

Answers

Answer:

Andrew made landfall at 5 a.m. as a Category 5 — at the time only the third Category 5 to land on U.S. soil — just south of Miami with top winds at 165 mph and a 16.9-foot storm surge

Explanation:

24. The density of silver at 20 °C is
10.5 g/cm³. What is the
volume of a 68-g bar of silver?

Answers

volume=6.5cm³

Explanation:

density= mass/ volume

volume= mass/ density

= 68/10.5

=6.5cm³

Which model of the atom has electrons traveling in specific paths around the nucleus?

A. Thomson’s model

B. Rutherford’s model

C. Bohr’s model

D. Dalton’s model

Answers

Answer:

C

Explanation:

this is because the rest talk about the findings of protons,neutrons and electrons.

Work Right, Work Safe at School and at Home
A laboratory is any area where science investigation occurs. Even your kitchen can be considered as one. What laboratory tools or equipment can be substituted with kitchen-wares? Choose five tools found in the laboratory and give a kitchenware that can serve as a substitute for each.

Laboratory Tools Kitchen-wares Substitute
Name:
Drawing/Illustration:
Use:
Name:
Drawing/Illustration:
Use:
Name:
Drawing/Illustration:
Use:
Name:
Drawing/Illustration:
Use:
Name:
Drawing/Illustration:
Use:

QUESTIONS:
1. Why is it important to know the use of laboratory tools and equipment? Give at least two reasons.

2. Why must working safe be practice in the laboratory?

Answers

A. Hot Plate - Materials are heated using hot plates. A stove may readily take the place of this equipment.

B. Test Tube Holder - Kitchen tongs, which come in various sizes, can be utilized in the absence of test tube holders.

C. Beakers and flasks are used for both measuring liquids and combining various ingredients. At home, measuring cups and measuring spoons can take their place because they are wide or tall enough to be used for mixing and still have the ability to be used to measure the ingredients.

D. Stirring Rod - A stirring rod can be replaced by a variety of items. Chopsticks are an example because of their similar shape, as are spoons, ladles, and forks if the container allows them.

E. Funnel - Typically, the material used to make a kitchen funnel and a laboratory funnel is the sole distinction. Kitchen funnels are often made of plastic, whereas laboratory funnels are made of heat-resistant glass. Nevertheless, as long as it is not exposed to extremely high temperatures, it can still perform the duties of a standard laboratory funnel.

1. Before conducting any type of experiment, you should always be familiar with your lab's equipment because, without it, you won't know how to use your materials or how to fix a mistake you might make with it.

2. You may aid in preventing or eliminating hazards by being familiar with the laboratory you're working in and by constantly adhering to the correct safety protocols. Additionally, you'll be aware of what to do in the unfortunate case that something goes wrong.

To learn more about laboratory tools refer- https://brainly.com/question/13231667

#SPJ9

Two or more substances in variable proportions where the composition is constant throughout are.

Answers

Answer:

homogenous mixture

Explanation:

no choices are given so that is my best guess

(b) .In an experiment, carbon (IV)oxide gas as passed over heated charcoal and the gas produced collected as shown in the diagram below Write an equation for the reaction that took place in the combustion tube (1mk)​

Answers

When carbon (IV)oxide gas is passed over heated charcoal ,the gas produced is Carbon Monoxide.

The oxidation state of carbon (II) oxide, often known as carbon monoxide, is +2. It is the suffocating gas created when gasoline in car engines burns inefficiently. Colorless, tasteless, odorless, and somewhat less dense than air, carbon monoxide is a gas. It is formed due to incomplete combustion of CO2. Carbon monoxide is much more threatening than CO2.

When carbon (IV)oxide gas is passed over heated charcoal ,the gas produced is Carbon Monoxide is Carbon (II) oxide is formed.

When coke or red-hot carbon is passed through carbon (IV) oxide, it is created.

The equation for the reaction is-

CO₂(g) + C(s)   →   2CO(g)

Hence, Carbon monoxide is formed when Carbon dioxide is passed over heated charcoal.

To learn more about Carbon monoxide refer- https://brainly.com/question/25350361

#SPJ9

pls help!

EXPERIMENTAL QUESTION: How does the amount of substance affect the rate at which temperature changes?

HYPOTHESIS: If the mass of a sample of water is increased, then the rate at which its temperature changes will be ____________________.

increased
decreased

Answers

Answer:

I'm guessing you are asking for the word that will make the hypothesis correct. In that case, it would be:
"If the mass of a sample of water is increased, then the rate at which it's temperature changes will be decreased."

Explanation:

Mass and temperature have an inverse relationship, so when one of the values increase, the other decreases. On Study.com there is more on this subject. I will put a link for you :)

https://homework.study.com/explanation/how-does-the-amount-of-a-substance-affect-the-rate-at-which-temperature-changes.html#:~:text=For%20a%20given%20amount%20of,a%20smaller%20increase%20in%20temperature.

I hope this helps!

Calcium carbonate decomposes into calcium oxide and carbon dioxide. If 224 g of calcium carbonate decomposes, how many moles of carbon dioxide gas is produced?.

Answers

When 224 g of calcium carbonate(CaCO3) decomposes , 2.24 moles of carbon dioxide is produced.

When calcium carbonate decomposes in the presence of heat, it produces calcium oxide and carbon dioxide. This reaction is represented by the following equation:

CaCO3 ⇒ CaO + CO2

It is clear from the above equation that,

1 mole of CaCO3 produces 1 mole of CO2

Or 100 g of CaCO3 produces 1 mole of CO2

Thus, 224 g of CaCO3 produces 1/100 x 224 = 2.24 moles of CO2

Therefore, if 224 g of calcium carbonate(CaCO3) decomposes, 2.24 moles of carbon dioxide is produced.

To know more about "calcium carbonate", refer to the link given below:

https://brainly.com/question/8764175?referrer=searchResults

#SPJ4

When methanol, ch3oh, is burned in the presence of oxygen gas, o2, a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation.

Answers

To produce 807 kJ of heat, 33.85g of methanol ([tex]CH_3OH[/tex]) must be burned.

When -764.0 kJ of heat is involved, 1 mol of methanol, [tex]CH_3OH[/tex] is reacting

Therefore, mol of [tex]CH_3OH[/tex] for -8.07 x [tex]10^2[/tex] kJ:

= -8.07 x [tex]10^2[/tex] x 1/-764.0 kJ

= 1.056 mol

Molar mass of methanol ([tex]CH_3OH[/tex]),

MM = 1 x MM(C) + 4 x MM(H) + 1 x MM(O)

= 1 x 12.01 + 4 x 1.008 + 1 x 16.0

= 32.042 g/mol

mass of methanol ([tex]CH_3OH[/tex]) used:

Mass, m = number of mol x molar mass

= 1.056 mol x 32.04 g/mol

= 33.85 g

Hence, 33.85g of methanol ([tex]CH_3OH[/tex]) must be burned to produce 807kJ of heat.

The complete question is:

When methanol, [tex]CH_3OH[/tex], is burned in the presence of oxygen gas, [tex]O_2[/tex], a large amount of heat energy is released. For this reason, it is often used as a fuel in high performance racing cars. The combustion of methanol has the balanced, thermochemical equation

[tex]CH_3OH (g) + 32O_2 (g) \rightarrow CO_2 (g) + 2H_2O (l)[/tex]  Δ= −764 kJ

How much methanol, in grams, must be burned to produce 807 kJ of heat?

Learn more about Methanol here:

https://brainly.com/question/10886248

#SPJ4

Which of these is true for a molecular model like the one shown ? A. We can always identify the type of each atom based on color. B. The model shows how the various atoms are connected in the molecule. C. The model shows the actual size of each atom correctly D. The model shows the relative sizes of the atoms to each other.

Answers

The true statement about the model is that the model shows how the various atoms are connected in the molecule.

What is a molecular model?

A molecular model is a representation of a molecule. We know that the molecular model shows the extent to which the atoms are bonded in the compound. The model gives us an idea of the intricate atom to atom arrangement that exists in the molecule that is under study.

Now we know that the atoms that are in the models must be shown by the use of different colors. This enables us to be able to effectively and properly distinguish between the atoms of the compound as shown in the model.

The true statement about the model is that the model shows how the various atoms are connected in the molecule.

Learn more about molecular models:https://brainly.com/question/156574?

#SPJ1

Which example shows an organism that cannot reach homeostasis through internal changes?
Responses


A lizard is cold, and it moves to a sunny rock to warm up.

A dog shivers when it is too cold.


Circulation decreases in a bird when it becomes too warm.
.

A person gets a fever in response to a flu infection.

Answers

Circulation decreases in a bird

based on the law of multiple proportions, how many grams of hydrogen would you expect 2.19 g of nitrogen to combine with to yield ammonia?

Answers

We're going to use 0.34 grams of nitrogen to resolve this. This would have a molar mass of, uh, 28 2 grams if we converted these two moles. Wu will then combine this as well. One-mole play is also a thing. three of H 2's moles. Grams of hydrogen are what we need. We will learn the answer here. Hydrogen weighs two grams per mole. Each gram weighs 0.501 grams. That would thus stand in for this. 2.34 grams of nitrogen would need to react with 0.501 grams of hydrogen to produce ammonia. 241=2 moles of nitrogen and 243=6 moles of hydrogen will be converted into 4 moles of ammonia. Nitrogen has a molar mass of 28 g/mol and hydrogen has a molar mass of 2 g/mol.

To know more about law of multiple proportions refer to http://brainly.com/      

Classify each of the following reactions as either exothermic or endothermic: 2H,O(l) + heat → 2H₂(g) + O₂(g)​

Answers

Answer:

endothermic

Explanation:

It is endothermic since it absorbs heat.  If the reaction RELEASED heat (exothermic) the "+ heat" would be on the right side of the equation.

Use the table of observed changes to answer the question. Change # Reacts with another substance? Temperature change? Gas, sound, or light produced? New substance formed? 1 yes yes yes yes 2 no yes yes no 3 yes yes yes yes 4 no no no no Which changes shown in the table are physical changes? (1 point) 1 and 4 1 and 4 2 and 3 2 and 3 1 and 2 1 and 2 2 and 4 2 and 4

Answers

Option 4- no, no, no, no. (for physical change.)

Chemical Change -A chemical change is the conversion of one substance into another, the development of new chemicals with unique features, or any combination of these.

There are five (simple) methods for identifying a reaction:

1. change of color

2. Gas formation

3. pH change

4. Temperature change

5. Precipitate formation

Physical change - A physical change happens when a substance's physical characteristics change without undergoing chemical composition. Common physical changes include melting, adjustments to size, volume, color, density, and crystal structure.

Therefore, according to the question physical changes are-

1. Reacts with another substance- no

2. Temperature change - no

3. Gas, sound, or light produced - no

4. New substance formed - no

To learn more about Physical change refer - https://brainly.com/question/14444325

#SPJ9

for the measurements 0.123 m, which digits is the estimated digit?​

Answers

Answer:

aaaaaaaaaaaaa

Explanation:

aaaaaaaaaaaaaaaa

under one set of conditions, the substances in a and b mix and the result is depicted in c. does this represent a chemical or a physical change?chemical changephysical changeb) under a second set of conditions, the same substances mix and the result is depicted in d. does this represent a chemical or a physical change?chemical changephysical changec) under a third set of conditions, the sample depicted in c changes to that in d. does this represent a chemical or a physical change?chemical changephysical changed) when the change in part (c) occurs, does the sample have different chemical properties? physical properties?yes, different chemical propertiesyes, different physical properties

Answers

a) The substances in A and B mix and the result is depicted in C is chemical change.

b) The substances in A and B mix and the result is depicted in D is chemical change.

c) Under a third set of conditions, the sample depicted in C changes to that in D is a kind of physical change.

d) When the change in part (c) occurs both the sample formed have same chemical properties.

In first case,

When the substances A and B mix and the result is depicted in C this implies that A and B react to give another substance C. Since C contain atoms of both A and B therefore, it have different property than A and B. So, it is a kind of chemical change.

In second case,

When the substances A and B mix and the result is depicted in D this implies that A and B react to give another substance D in different set of condition. Since D also contain atoms of both A and B therefore, it also have different property than A and B. So, it is a kind of chemical change.

In third case,

As we know that C and D both formed by the reaction between A and B in different set of conditions. So, we can say that C and D basically differ from each other in terms of state. So, C can be converted into D by either cooling or boiling. So, it is a kind of physical change.

In fourth case,

Since, we found that both C and D are differ in state of matter but they have same Chemical properties as both are formed of A and B. So, we can say that, C and D have same chemical properties but have different Physical properties.

Thus, we concluded that when A and B react to form C and in other case form D it is Chemical change. When C converted into D, it is physical change while both have same chemical properties.

learn more about physical or chemical changes:

https://brainly.com/question/18690541

#SPJ4

a mixture of caco₃ and cao has a mass of 2.500 g. after heating, the mass of the sample is reduced to 2.016 g. what is the mass percent of caco₃ in the mixture? caco₃(s) → cao(s) co₂(g)

Answers

There is 44 % of CaCO3 in the mixture

Step 1: Data given

Mass of mixture = 2.500 grams

Mass after heating = 2.016 grams

Step 2: The balanced equation

CaCO3 → CO2 + CaO

Step 3: Calculate mass CO2 lost

Mass CO2 lost = Mass before heating - mass after heating

Mass CO2 = 2.500 - 2.016 = 0.484 grams

Step 4: Calculate the mole's CO2

Moles CO2 = Mass CO2 / molar mass CO2

Moles CO2 = 0.484 grams / 44.01 g/mol

Moles CO2 = 0.0109 moles

Step 5: Calculate moles CaCO3

For 1 mol CaO we need 1 mol CO2 for 1 mol CaCO3

For 0.0109 mol CO2, we have 0.0109 mol CaCO3

Step 6: Calculate the mass of CaCO3

Mass CaCO3 = moles CaCO3 * molar mass CaCO3

Mass CaCO3 = 0.0109 moles * 100.08 g/mol

Mass CaCO3= 1.10 grams

Step 7: Calculate the mass per cent of CaCO3

Mass % CaCO3 = (

There is 53.8 % of CaCO3 in the mixture 1.10 grams / 2.750 grams )*100 %

Mass % CaCO3 = 44 %

The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilograms of carbon 12.

Learn more about mole here:

https://brainly.com/question/20486415

#SPJ4

Select the correct answer. what is tempera? a. pigment mixed with egg yolk as a binder. b. pure, undiluted pigment. c. pigment made from zinc and cobalt.

Answers

The correct answer is (A) pigment mixed with egg yolk as a binder.

A natural emulsion that is water-soluble, such as glue, honey, milk in the form of casein, or a variety of plant-based gums, can hold pigment in tempera, a painting media.

Using tempera, you can blend the essential colours as you go while creating the paint from scratch. Although it should be noted that some pigments require more binder than others and that the more egg added, the more transparent the resultant paint will be, mixes should begin with an equal volume of pigment and binder.

From the early 1500s, when oil paints started to gain popularity, tempera served as the main painting medium, it was employed for icon painting and painted panels in churches, and it is still utilised today.

To learn more about emulsion, refer this link.

https://brainly.com/question/6711819

#SPJ4

Why is it important to water your house plants?

Answers

So they can have nutrients from the water to keep it from not dying

Answer:

Plants need water to grow. Plants are about 80-95% water and need water for multiple reasons as they grow including for photosynthesis, for cooling, and to transport minerals and nutrients from the soil and into the plant.

triaryl-1,3,5-triazinane-2,4,6-triones (isocyanurates) peripherally functionalized by donor groups: synthesis and study of their linear and nonlinear optical properties

Answers

the synthesis study of triaryl-1,3,5-triazinane-2,4,6-triones is functionalized by d6-transition metal acetylides complexes at their periphery .

triaryl-1,3,5-triazinane-2,4,6-triones (isocyanurates) peripherally functionalized by donor groups: The linear optical (LO) and nonlinear optical (NLO) properties of a series of isocyanurates functionalized by donor's arms at the periphery. These octupolar derivatives were obtained from commercial isocyanate derivatives several of these derivatives exhibit remarkable transparency or activity/ tradeoffs. In third‐order activity, the stronger donor groups (X=NH2, NMe2, or NPh2) with the longer derivatives possess effective two‐photon absorption cross sections displayed for the extended arylamino cyclotrimers. to rationalize their non linear properties and unravel their electronic structures DFT computations were also performed.

To know more about isocyanurates refer to the link  https://brainly.com/question/27507786?referrer=searchResults.

#SPJ4

2. in nature the element neon exists as three different isotopes, ne-20, ne-21, and ne-22. which neon isotope predominates? explain your choice.

Answers

The three isotopes of Neon, Ne-20, Ne-21, and Ne-22 are said to have an atomic number. Neon - 20 with a mass of 19.99 amu predominate all other isotopes.

What are isotopes?

Isotopes as been defined as atoms of the same element with different atomic masses but the same atomic number as the number of neutrons differs in the atoms. The neon element has three isotopes, Ne-20, Ne-21, and Ne-22.

Ne - 20 is the most predominant isotope of the Neon element as it most abundant and stable isotope with an abundance of 90.48% followed by Ne-22 (9.25%), and Ne-21 (0.27%).

Therefore, Ne-20 is a predominant isotope of Neon.

Learn more about isotopes, here:

https://brainly.com/question/27475737

#SPJ4

what is the simple unit factor that relates the number of hydrogens in sucrose to the number of oxygens?

Answers

The simple unit factor that relates the number of hydrogens in sucrose to the number of oxygens is:

2 moles hydrogen = 1 mole of oxgen

Formula of sucrose

The formula of sucrose is given as follow:

C₁₂H₂₂O₁₁

From the formula, we obtained the following

12 moles of carbon22 moles of hydrogen11 moles of oxygen

How to determine the unit that relates hydrogen and oxygen

1 mole of C₁₂H₂₂O₁₁ contains:

22 moles of hydrogen11 moles of oxygen

Thus, the unit factor that relates hydrogen and oxygen can be obtained as follow:

Hydrogen / Oxygen = 22 / 11

Hydrogen / Oxygen = 2 / 1

Thus,

2 moles hydrogen = 1 mole of oxgen

Thus, for every mole of oxygen, there are 2 moles of hydrogen

Learn more about ratios in organic compounds:

https://brainly.com/question/7341200

#SPJ1

which one of the following carbonyl compounds has the highest percentage of enol when keto-enol equilibrium has been established?

Answers

When keto-enol equilibrium has been reached, the compound with the largest percentage of enol is 1,2 cyclo hexanedione.

1,2-cyclohexanedione

The chemical compound 1,2-cyclohexanedione has the formula (CH2)4(CO)2. It is one of three cyclohexanediones that are isomeric.

It is a substance with no colour that dissolves in a number of organic solvents. It can be made by using selenium dioxide to oxidise cyclohexanone.From this di ketone, numerous diimine and dioxime ligands have been created. In order to produce diaza heterocycles, it condenses with 1,2-diamines.chemical formula: C6H8O21.1305 g/cm3 is the density.Molecular weight: 112.128 g/molCyclohexane-1,2-dione hydrolase, a novel tool to degrade alicyclic molecules, is studied using 1,2-cyclohexanedione as a substrate. Additionally, it serves as a particular reagent for arginine residues.

learn more about keto-enol equilibrium here

https://brainly.com/question/4476334

#SPJ4

PLEASE HELP!! I need to know the answer to this but I'm overly exhausted and the question isn't making and sense...
An unknown element has three naturally occurring isotopes.

Below are their masses (amu) and % abundance

A) Calculate the weighted atomic mass unit for each isotope. Show % conversions and record the AMU for each isotope in the table below

B) What is the average (Total) atomic mass unit of the unknown element.

C) Identify this unknown element from the Periodic Table

Answers

An unknown element has three naturally occurring isotopes total average atomic mass 20.18 amu and element from the periodic table is neon

Isotopes are the members of a family of an element that all have the same number of protons but different numbers of neutrons

There are three neon isotopes and the more abundant ²⁰Ne and ²¹Ne are both essentially all primordial, as there is no significant global production of these isotopes and also ²²N

Neon 20 is made up of ten proton and ten neutron the atomic mass unit of the gas is 19.992 and the abundance of the gas is 90.48% and neon 21 is made up of ten proton and eleven neutron and the atomic mass unit of the gas is 20.994 and the abundance is 0.27% and neon 22 is made up of ten proton and twelve neutron and the atomic mass unit of the gas is 21.991 and the abundance of gas is 9.25%

Unknown element from the periodic table is neon

Know more about isotopes

https://brainly.com/question/13658643

#SPJ1

Transferring small quantities of liquid solutions from one container into another

Answers

Using Pasteur Pipettes (or pipets) are the most commonly used tool for transferring small volumes of liquids (< 5mL) from one container to another.

What is Pasteur Pipettes?

A pipette, also called pipett, is a lab instrument frequently used in the fields of chemistry, biology, and medicine to transfer a predetermined volume of liquid, frequently as a media dispenser. Pipettes are available in a variety of styles with varying degrees of accuracy and precision, ranging from simple single-piece glass pipettes to more intricate adjustable or electronic pipettes. In order to draw liquid up and out of a pipette, a partial vacuum is often created above the liquid-holding chamber and then selectively released. Depending on the instrument, measurement accuracy varies substantially.

Although each form of pipette has particular descriptive titles, in practice any sort of pipette will only be referred to as a "pipette," and the required device will be clear from the context. Occasionally, pipettes that dispense.

To learn more about Pasteur Pipettes from the given link:

https://brainly.com/question/28317009

#SPJ4

Some lipid rafts are characterized by an accumulation of cholesterol. What does this mean for the fluidity of the lipid raft?.

Answers

The lipid rafts are less fluid than the surrounding membrane at normal temperatures.

Cholesterol decreases the fluidity of the membrane at normal temperatures.

Lipid rafts regulate neurotransmission, receptor traffickinging and influence membrane fluidity.

Membrane fluidity refers to the viscosity of the lipid bilayer.

Cholesterol in the rafts has a potential to effectively control the ion conductance and excitability of membranes.

For example, in phospholipid layer in cell membrane, there are hydrophilic heads (polar part of the layer) and hydrophobic tails (nonpolar part of the layer).

1) Small, non-polar molecules diffuse easily through this layer, no energy is required, this is passive transport.

2) Polar molecules cannot diffuse through phospholipid layer using passive transport, because hydrophobic tails does not allow that (polar molecules are reppeled), energy is required for that, this is active transport.

More about cholesterol: brainly.com/question/841110

#SPJ4

a solution contains 0.0440 m ca2+ and 0.0930 m ag+. if solid na3po4 is added to this mixture, which of the phosphate species would precipitate out of solution first? ca3(po4)2 ag3po4 na3po4 when the second cation just starts to precipitate, what percentage of the first cation remains in solution?

Answers

The percentage of the first cation that remained in the solution when the second cation starts to precipitate is 12.86%.

[tex]Ca ^{ + } in \: the \: solution \: = 0.0440[/tex]

[tex]Ag ^{ + } \: in \: the \: solution = 0.0940[/tex]

The balanced reaction for the equation is,

[tex]Ag_{3} PO _{4} →3Ag ^{3 + } + \: PO ^{3 - } _{4}[/tex]

[tex]Solubility \: product \: constant \: of[/tex]

[tex]Ag_{3} PO _{4} = 8.89 \times 10 ^{ - 17} [/tex]

[tex]k _{s} =[Ag ^{ + } ]^{3} \: [PO _{4} ^{3 - } ] [/tex]

[tex]8.89 \times 10 ^{ - 7} = (0.940) ^{3} \: [PO _{4} ^{3 - } ] [/tex]

[tex] \frac{8.89 \times 10 ^{ - 7}} { (0.940) ^{3}} = \: [PO _{4} ^{3 - } ] [/tex]

[tex] [PO _{4} ^{3 - } ] = 1.07 \times 10 ^{ - 13} [/tex]

The balanced equation for the reaction is,

[tex]Ca_{3} (PO _{4}) _{2}→3Ca ^{2 + } + 2PO _{4} ^{3 - } [/tex]

[tex]The \: solubility \: product \: constant \: of [/tex]

[tex]Ca_{3} (PO _{4}) _{2} = 2.07 \times 10 ^{ -32} [/tex]

[tex]k _{s} = [Ca ^{ 2 + } ] ^{ 3} \: (PO _{4}) _{2}[/tex]

[tex]2.07 \times 10 ^{ - 33} = (0.0440)^{3} \: (PO _{4} ^{3 - } )^{2} [/tex]

[tex] [PO _{4} ^{3 - } ] = \frac{2.07 \times 10 ^{ - 33} }{(0.0440)^{3} }[/tex]

[tex](PO _{4} ^{3 - }) = 4.93 \times 10 ^{ - 15} [/tex]

[tex]Ca_{3} (PO _{4}) _{2} \: will \: precipitate \: first.[/tex]

[tex]Concentration \: of \: Ca ^{ + 2} \: when \:[/tex]

the second cation starts to precipitate.

[tex]k _{s} = [Ca ^{ + 2} ] ^{ 3} \: (PO _{4} ^{3 - } ) ^{2} [/tex]

[tex]2.07 \times 10 ^{ - 33} = [Ca ^{ + 2}] ^{3} \: \times 10 ^{ - 33} [1.07 \times 10 ^{ - 13} ] ^{2} [/tex]

[tex] [Ca ^{ + 2}] = 0.00566[/tex]

The percentage of the first cation that remained in the solution when the second cation starts to precipitate is,

[tex]percentage \: \: of \: remaining \: Ca ^{ + 2} = \frac{concentration \: remaining}{initial \: concentration } [/tex]

[tex] = \frac{0.00566}{0.044} \times 100[/tex]

= 12.86 %

Therefore, the percentage of the first cation that remained in the solution when the second cation starts to precipitate is 12.86%.

To know more about precipitation, refer to the below link:

https://brainly.com/question/20925010

#SPJ4

Pls guy's.
state the periodic law. I need it now​

Answers

Explanation:

The Periodic Law states that the physical and chemical properties of the elements recur in a systematic and predictable way when the elements are arranged in order of increasing atomic number. Many of the properties recur at intervals. When the elements are arranged correctly, the trends in element properties become apparent and can be used to make predictions about unknown or unfamiliar elements, simply based on their placement on the table.

Answer:

The periodic law states that, "properties of the elements very periodically with their Relative Atomic Mass

Explanation:

Then the modern periodic law states that, "The chemical and physical properties of element are a periodic function of the atomic number"

Hope it helps

An electrically neutral atom of beryllium has four protons. Which statement is true? There are four protons in the nucleus. There is a charge of −4 on an atom of beryllium. There are four neutrons in the nucleus. There is a charge of +4 on an atom of beryllium.

Answers

Answer:

there are four protons in the nucleus

What is Electron gain Enthalpy?​

Answers

Answer:

Electron gain enthalpy is defined as the amount of energy released when an electron is added to an isolated gaseous atom. 

Other Questions
what are the slope and the y intercept of the linear function represented by the equation y=9x-2 Which would increase an objects temperature critical thinkers blank . obtain and consider a wide range of information before passing judgment An older patient visits the doctor and learns that they have a disease known as atherosclerosis,where there is a build-up of fat and cholesterol inside their blood vessels. An illustration of thiscondition is shown in the image below.Which of the following is a result of their condition?A. increased blood volumeB. decreased blood volumeC. increased blood pressureD. decreased blood pressure read and analyze the given quotation below. in 1-3 sentences, share your insights about it. the quotation: the biggest communication problem is we do not listen to understand. we listen to reply. The quotient of 24 and d Tatianna and Genesis are both saving money to buy new dolls. Theratio of Tatianna's saving to Genesis's saving is 3:1. If they havesaved $400, how much has each girl saved? Hey guys I have a question. Before I ask. I uploaded an image below about the essay. So my question is "How do people see History" (there's more to this...down below as well) Gina is making a scrapbook and is putting 6 pictures on each page. She has completed 12 pages so far. How many pictures has she used? What is the problem asking you?PLS HELP 100 POINT QUESTION what is the difference between melting and fusion? Is Fe+S classified as a mixture, an element, or a compound? Who else joins Isabel and Ivans family on their trek to the U.S.? aLuis and Amara bTom and Jerry cAlejandro and Minelly dKim and Kanye The colonists objected to "taxation without representation."What kind of taxation do you think they would have supported? Why? Use the drop-down menus to indicate whether each sentence is in the subjunctive mood. you made ml of a lead(ii) nitrate solution for lab but forgot to cap it. the next lab session you noticed that there was only ml left (the rest had evaporated). in addition, you forgot the initial concentration of the solution. you decide to take ml of the solution and add an excess of a concentrated sodium chloride solution. you obtain a solid with a mass of g. what was the concentration of the original lead(ii) nitrate solution? 33/25 as a decimal rounded to the nearest tenth how to simplify 4x5 / 1+9 The three stages of the Anglo boer war to the correct order A business plan is a tool used by the federal government to determine how to strengthen the business sector through macroeconomics and microeconomics. True or false?. knockout of the circadian clock protein per1 exacerbates hypertension and increases kidney injury in dahl salt-sensitive rats