multiple select

Question

Select all of the items that are true about a sample of water vapor at 101°C as it cools.

1) Its temperature will fall continuously until it condensed into a liquid.
2) Its temperature will fall steadily until reaching 100°C.
3) The molecules of water gain potential energy.
4) Its temperature will remain at 100°C until all the vapor condenses.

Answer 1

1 is true. 2 is not true at all pressures.
3. is patently false
4. is not true at all pressures. ever been on a mountain top?

Answer 2

thank you. and no i haven't.