How many kcal of heat are produced when 0.500 moles of CH4 react? CH4 + 202 → CO2 + 2H20 Heat= -218 kcal

A)- 218 kcal
B)- 109 kcal
C)- 436 kcal
D)- 654 kcal
E) +436 kral

At room temperature what happens to the average kinetic energy of the molecules of a solid, liquid, and a gas

Is a pencil falling to the floor anon contact force, a force, or a contact force

Which of the following statements is true about energy quantization at the atomic level? electrons in the outermost orbits are the most stable. electrons in all the orbits around the nucleus have the same amount of energy. electrons in the orbit closest to the nucleus have the least amount of energy. electrons absorb or release the same amount of energy independent of the energy levels.