Compared to a 0.500 mole sample of Helium gas at 0.00°C and 760. mmHg, a 0.500 mole sample of
Hydrogen at 298 K and 101.3 kPa contains
A) molecules having higher average kinetic energy
B) fewer molecules
C) more molecules
D) molecules having lower average kinetic energy

What energy conversion occurs when a sling shot is used to shoot a rock across the room? (2 points) question 2 options: 1) stored mechanical energy is converted to mechanical energy. 2) stored mechanical energy is converted to radiant energy. 3) gravitational energy is converted to radiant energy. 4) gravitational energy is converted to mechanical energy.