Question

At STP, 0.50 mol $H_2$ gas and 1.0 mol He gas

• A. Have equal average kinetic energies
• B. Have equal molecular speeds
• C. Occupy equal volumes
• D. Have equal effusion rates

Answer 1

The correct option is A

Have equal average kinetic energies

For same temperature kinetic energies of $H_2$ & He molecules will be same because kinetic energy depends only on temperature.