Can somebody please help me!!!

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?

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

Aman applies a force of 500n to push a truck 100m down the street how much does he do?