Question

The quantities which remains same for all ideal gases at the same temperature is/are?

• A. the kinetic energy of equal moles of gases
• B. the kinetic energy of equal mass of gases
• C. the number of molecules in equal moles of gases
• D. the number of molecules of equal mass of gases

Answer 1

The correct option is C the number of molecules in equal moles of gases

Kinetic energy $\propto \frac{3KT}{m}$

It is inversely proportional to mass of a molecule not on moles of gases or mass of gases.

And Avogadro no. of molecules in equal no. of molecule in equal mole of gases is constant.

Hence, the answer is the number of molecules in equal moles of gases.