Suppose a sample of air can hold at most 10 grams of water vapor. if the sample actually had 2 grams of water vapor, what is its relative humidity

Melting and boiling are endothermic processes. this means that these processes absorb energy from their surroundings in order to occur. use this information and the data you collected in the phase change gizmo to describe what happens to the temperature of water when you boil it, then explain why this result occurs.

Ineed ! i have no clue how to do this problem.

Is this correct if not can u correct me