# A sealed box contains a monatomic ideal gas. The number of gas atoms per unit volume is 6.31×1020 atoms/cm3, and the average translational kinetic energy of each atom is 1.20×10−23 J . What is the gas pressure?p = ? Pa If the gas is neon (molar mass 20.18 g/mol ), what is vrms for the gas atoms?Vrms = ____ ? _____ units

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Asked Sep 10, 2019
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A sealed box contains a monatomic ideal gas. The number of gas atoms per unit volume is 6.31×1020 atoms/cm3, and the average translational kinetic energy of each atom is 1.20×10−23 J .

What is the gas pressure?

p = ? Pa

If the gas is neon (molar mass 20.18 g/mol ), what is vrms for the gas atoms?

Vrms = ____ ? _____ units

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Step 1

Write the expression for average translational kinetic energy

Step 2

Write the ideal gas equation in terms of number of molecules per unit volume

Step 3

Substituting th...

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