Water has a heat of fusion of about 400 J/gram and a heat capacity for ice of about 2 J/gºC. How much heat is needed to warm 100 grams of ice from -50°C until it has all become liquid water at 0°C? 5 kJ
50 kJ
40 kJ
41 kJ​

The electromagnetic force acts between what

The molecular formula for caffeine is cshion402. which of the following elements is not found in caffeine?

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?