How many neutron in total were produced by the two

How does a hydroelectric power plant converts energy into energy.

Explain that newton first law,second law and third law of motion?

A5 mole sample of liquid acetone is converted to a gas at 75.0°c. if 628 j are required to raise the temperature of the liquid to the boiling point, 15.600 kj are required to evaporate the liquid, and 712 j are required to raise the final temperature to 75.0°c, what is the total energy required for the conversion?