The molar mass of hydrogen molecules is 2g/mol and the molar mass of oxygen molecules is 32g/mol. What is the ratio of the average kinetic energy of the molecules of 1 mole of hydrogen gas at 300K to 1 mole of oxygen gas at a temperature of 300K, assuming they both behave as ideal gases?

1

Explanation:

For an ideal gas, the average kinetic energy is given by:

Ek = (3/2) * n*R*T

Where n is the number of moles, R is the gas constant (8.31 J/mol*K), and T the temperature. The gases have the same number of moles, and the same temperature, so they will have the same average kinetic energy:

Ek = (3/2) * 1*8.31*300

Ek = 3739.5 J

So, the ratio between then is 1.