The equation c = 2.95 g show how much it costs to buy gas at a gas station on a certain day. n the equation c represents the cost in dollars and g represents how many gallons of gas were purchased.
Write down at least four (gallons of gas cost) pairs that fit this relationship.
what is exactly equal to the total number of protons and neutrons in an atom?
Answer:
That would be the mass.
water has a density of 1.0 g/mL. a plastic cup floats when it is placed into a container of water. what can you conclude about the density of the plastic cup? (look at the picture)
Please tel me the answer I will mark you brainliest
2 is the answer
Explanation:
the other answers are all included in the cell theory
Two scientists are investigating the properties of water. In one experiment, they notice that water breaks down to hydrogen and oxygen gas during a chemical reaction. Which of the following does this experiment demonstrate
A. it demonstrates that a water molecule consists of two hydrogen atoms and one oxygen atom.
B. it demonstrates that water consists of atoms
C. it demonstrates that water is a compound
D. it demonstrates that water is an element
Answer:
A
Explanation:
Overlap of the electron clouds of two atoms results in a(n)
a hydrogen bond
b dipole
C ionic bond
d covalent bond
Check it
We know that the electron clouds of two atoms overlapping is a bond, because that signifies that the electrons are being shared in a bond.
So, I'm going to go through some definitions of these different types of bonds, because they have very specific circumstances.
A hydrogen bond is a bond between an electronegative atom and a hydrogen molecule (which is not what this question says, this isn't stated anywhere).
A dipole is a difference in electron density on two different atoms (so this isn't even close to what the question is stating, a dipole is not even a bond)
An ionic bond is an unequal sharing of electrons between two atoms (because the question doesn't state this specific fact, then it can't be this option).
By process of elimination, we know the answer is covalent bond, but just in case, we can also look at the definition of a covalent bond: a bond that involves the sharing of electrons between atoms.
That is exactly what the question is asking for! Therefore, your answer is d. covalent bond
when food looks bad this type of food spoilage is usually due to
microbial growth
nitrates
organic acids
sulfides
Answer:
microbial growth
Explanation:
food that is not properly kept at a proper temperature bacteria will grow causing spoilage
does 1 gallon or 100 gallons take longer to boil
Answer:
it takes 100 gallons longer to boil then it does 1 gallon
Explanation:
brainliest please??
The opposite of an endothermic reaction is a(n) reaction.
Answer:
The opposite of an endothermic process is an exothermic process, one that releases or "gives out" energy, usually in the form of heat and sometimes as electrical energy.
Explanation:
Hope this helps you. Have a nice day. Please mark as brainliest. It helps a lot. ^_^
is the moon bigger than neptune
Answer:
Neptune is bigger than the moon
Explanation:
The circumference of the moon is 6,783.5 miles
The circumference of Neptune is 96,129 miles
This means neptunes circumference is about 14 times the size of the moons
6C6H12O6
How many total atoms of oxygen are present in the molecules represented here?
Answer:
The answer is 36 atoms
Explanation: I took the test and i got 100%
There are 36 oxygen atoms in the representation "6 C₆H₁₂O₆".
We have the expression "6 C₆H₁₂O₆", which represents 6 molecules of C₆H₁₂O₆.
The subscripts are the atomicities of the element, that is, the number of atoms of each element in 1 molecule.
There are 6 atoms of oxygen per molecule of C₆H₁₂O₆. Considering that there are 6 molecules, the total number of atoms of oxygen are:
[tex]6 Molecules \times \frac{6\ O\ atoms}{1Molecule} = 36\ O\ atoms[/tex]
There are 36 oxygen atoms in the representation "6 C₆H₁₂O₆".
Learn more: https://brainly.com/question/16776664
1.What is another term for the 24 hour clock?
Answer:
military time
Explanation:
military time
Someone pls help me
Answer:
A. 4 cm, 40 mm
B. 5.5 cm, 50 mm
C. 8.8cm, 80 mm
D. 8.2 cm, 82 mm
E. 9.5cm, 95 mm
Explanation:
NB: 1 cm = 10 mm
what is the relationship between gas particles and pressure
Answer:
For a fixed mass of an ideal gas kept at a fixed temperature, pressure and volume are inversely proportional. Or Boyle's law is a gas law, stating that the pressure and volume of a gas have an inverse relationship. If volume increases, then pressure decreases and vice versa, when the temperature is held constant..
Explanation:
Hope it helps you..
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pls help me on this I have 5 minutes left to submit
#1
Heterogenous mixture mean unsimilar substances .
Chicken noodle soyp.salt waterpropane.#2
An element is a substance made of only one type of atoms
Example-Al,SJust need to make sure if this is right
Answer:
yeah think that’s correct
Explanation:
not exactly sure how to explain this, I just know that it’ll prolly just stay the same and not move to any high and low regions of the cell
PLEASE HELP i have medical issues and i am behind
Only one of the following is a characteristic of a heterogeneous mixture
a. composition is uniform throughout the mixture
b. contains two or more phrases
c. is a pure substance
d. the mixture composition is always the same
Answer:
b contains 2 or more phases
what is physical change
Answer:
changes that dont result in the formation of new substance with new properties.
convert 230.000 000 000 mi into scientific notation
Answer:2.3×10^11
Explanation:since scientific notation is as a×10^k with 0<a<=9
7.
Which of the following gases is an important greenhouse gas?
a. Hydrogen
b. Nitrogen
C. Carbon dioxide
d. Oxygen
Answer:
C
Explanation:
I guess
Answer:
c. carbon dioxide
Explanation:
its the highest percentage of gas produced compared to hydrogen, nitrogen and oxygen.
what is the molar mass of dimethylglyoxime, c4h8n2o2?
Answer: 116.12 g/mol
Explanation:
The molecular mass of a formula unit of dimethylglyoxime is calculated as 116 g/mol.
What is molecular mass?The molecular mass can be given as the sum of the mass of each element in the formula unit of the compound.
The dimethylglyoxime is the compound with molecular formula, [tex]\rm C_4H_8N_2O_2[/tex].
The mass of each element in the compound is:
Carbon = 12 gramsHydrogen = 1 gramsNitrogen = 14 gramsOxygen = 16 gramsSubstituting the mass in the formula unit of the compound as:
[tex]\rm C_4H_8N_2O_2=4(carbon)+8(hydrogen)+2(nitrogen)+2(oxygen)\\ C_4H_8N_2O_2=4(12)+8(1)+2(14)+2(16)g\\ C_4H_8N_2O_2=116\;g[/tex]
The molecular mass of dimethylglyoxime is 116 g/mol.
Learn more about molecular mass, here:
https://brainly.com/question/14327882
A student in lab is determining the density of beads of an unknown metal using displacement by volume. The beads are added to an empty beaker (82.0 g) and with the metal beads it weighs 205.5 g. The beads are poured out into a graduated cylinder containing 60.9 mL of water and the water rises to 70.8 mL mark. What is the density of the metal beads in g/mL?
a. 0.34
b. 0.08
c. 12.47
d. 2.90
e. 1.74
The density of the metal beads is 12.47 g/mL (option c).
1. Determine the mass of the metal beads:
Mass of beaker + metal beads = 205.5 g
Mass of empty beaker = 82.0 g
Mass of metal beads = (Mass of beaker + metal beads) - (Mass of empty beaker)
= 205.5 g - 82.0 g
= 123.5 g
2. Determine the volume of water displaced by the metal beads:
Initial volume of water in the graduated cylinder = 60.9 mL
Final volume of water in the graduated cylinder = 70.8 mL
Volume of water displaced = Final volume - Initial volume
= 70.8 mL - 60.9 mL
= 9.9 mL
3. Calculate the density of the metal beads:
Density = Mass / Volume
Density = 123.5 g / 9.9 mL
Density = 12.47 g/mL
Therefore, the density of the metal beads is 12.47 g/mL (option c).
For more such questions on density, click on:
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5. Which of the following statements illustrates osmosis?
Answer:
there is no following so sorry
Pls helpppp me if you cannn
Answer:
Solution A : calcium hydroxide
Solid B : calcium oxide
Gas C : Hydrogen gas
Explanation:
i) When metals react with water they form hydroxides thus calcium hydroxide
ii) When metals eact with oxygen they form oxides.
iii) Wehn metals react with hydrochloric acid they form a salt and a gas hydrogen.
HOPE THIS HELPED
How do you determine how many molecules are in a chemical equation
Answer:
Determine the mass of substance and it's molar mass. Divide the given mass by it's molar mass to get moles and multiply time
6.002*1023 molecules 1mole
earth has two movements in space what are they called ?
Please helpp!! I give brainliest!
Answer:
Volume is cut in half
Explanation:
• From boyles gas law
[tex]{ \rm{P \: \alpha \: \frac{1}{V} }} \\ \\ { \rm{P _{1}V _{1} = P_{2}V _{2} }}[/tex]
P is pressureV is volume[tex]{ \rm{(1 \times V _{1}) = (2 \times V _{2})}} \\ \\ { \rm{ \frac{V _{2}}{V_{1}} = \frac{1}{2} }} \\ \\ { \boxed{ \rm{V_{2} : V _{1} = \frac{1}{2} }}}[/tex]
KI + Pb(NO3)2 → Pbl2 + KNO3
This chemical reaction represents the reaction of
potassium iodide (KI) and lead nitrate (Pb(NO3)2) to
form lead iodide (Pbl2) and potassium nitrate (KNO3).
When correctly balanced, the coefficient for lead iodide
will be_________.
Select one:
3
6
2
The balanced for the reaction is:
2KI + Pb(NO₃)₂ → Pbl₂ + 2KNO₃
When the equation is balanced, the number of atoms for each element on both the reactant and product sides of the equation are equal. This can be seen below:
Reactant Product
K 2 2
I 2 2
Pb 1 1
N 2 2
O 6 6
I need help pleaseee!!!!!!!! Fast
Answer:
C.) 1700 Pa
Explanation:
300 k - 0.3 m^3 = 17000
What is sliver?
[tex]silver[/tex]
Chemical element
Silver is a chemical element with the symbol Ag (from the Latin argentum, derived from the Proto-Indo-European h₂erǵ: "shiny" or "white") and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal.
Explanation:
Silver is a chemical element with the symbol Ag and atomic number 47. A soft, white, lustrous transition metal, it exhibits the highest electrical conductivity, thermal conductivity, and reflectivity of any metal.