Describe the reactions of lithium, sodium and potassium with water. In your description, write about:
i the difference in the reactivity of the metals
ii the observations you would make when these metals react with water.

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?