The sum of the coefficients in the balanced equation that describes the combustion of pentane (C5H12) is .

When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?

3. how much energy in joules is required to evaporate .0005 kg of liquid ammonia to vapor at the same temperature? 4. how much energy ( in megajoules ) is given up by .75 kg of water at 0c when it freezes to form ice at 0c? 5. explain how heat works between and at critical temperatures?

Which statement best describes the he properties of iconic compounds ?