What is the pH of a neutral solution at 25ºC?
a. 14
b. 0
c. 1
d. 7

How many miles of water are produced if 5.43 mol pbo2 are consumed

When balancing a chemical equation:

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?