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3 years ago

What determines the average kinetic energy of particles in a gas ?

2 answers:

6 0

This in turn determines whether the substance exists in the solid, liquid, or gaseous state. Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.

Advocard [28]3 years ago

6 0

<u>Answer:</u> Temperature of the substance determines the average kinetic energy of particles in a gas.

<u>Explanation:</u>

Average kinetic energy is defined as the average of all the kinetic energies of the particles in a system. It is a measure of temperature of the particles in a gas.

The equation used to calculate the average kinetic energy of the particles is given as:

$E=\frac{3RT}{2N_A}$

where,

R = Gas constant

T = Temperature of the gas

$N_A$ = Avogadro's number

E = Average kinetic energy of the particles

As, temperature is directly related to the average kinetic energy of the gas. Thus, the temperature of the particles increases, the average kinetic energy of the particles also increases and vice-versa.

Thus, temperature of the substance determines the average kinetic energy of particles in a gas.

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The molar mass of vitamin A (C20H30O).

vivado [14]

Molar mass of C: 12.011 g/mol
The equation says C20, which means there are 20 carbon atoms in each molecule of Vitamin A. So, we multiply 12.011 by 20 to get 240.22 g/mol carbon.

Molar mass of H: 1.0079 g/mol
The equation says C30, which means there are 30 hydrogen atoms in each molecule of Vitamin A. So, we multiply 1.0079 by 30 to get 30.237 g/mol hydrogen.

Molar mass of O: 15.999 g/mol
The equation says O without a number, which means there is only one oxygen atom in each molecule of Vitamin A. So, we leave O at 15.999 g/mol.

Then, just add it up:
240.22 g/mol C + 30.237 g/mol H + 15.999 g/mol O = 286.456 g/mol C20H30O

So, the molar mass of Vitamin A, C20H30O, is approximately 286.5 g/mol.

4 0

3 years ago

HELP ASAP ILL GIVE BRAINIEST!!!

UNO [17]

Answer:

1. the group number of sodium is 1 and it is a metal

2. the group number of helium is 18 and it is a nonmetal

3. the group number of iodine is 17 and it is a nonmetal

4.the group number of calcium is 2 and it is a metal

5. lithium has similar properties to potassium

6. calcium has similar properties to magnesium

7. neon has similar properties to xenon

8. Iodine has similar properties to chlorine

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3 years ago

Which molecules are pure elements?

Elenna [48]

Well none since molecules are a group of two or more atoms electrically bonded with one another. However, there are gases that does not naturally bond due to their stability and can be found in nature as pure elements. But these are not considered as molecules.

(By the way, these gases are the noble gases that can be found on the last column of the periodic table)

8 0

4 years ago

Read 2 more answers

Hi guys,

Nadya [2.5K]

Answer:

2269.43 mL

Explanation:

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✨BRAINLIEST WILL BE APPRECIATED✨

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3 years ago

Classify the chemical equations as being balanced or not balanced. CaO + 3C → CaC2 + CO Na + H2O → 2NaOH + H2 4Fe + O2 → 2Fe2O3

jarptica [38.1K]

Answer:

A) Balanced

B) Not Balanced

C) Not Balanced

D) Balanced

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3 years ago