Consider the chemical equation in equilibrium.

2h2(g) + o2(g) < > 2h2o(g)

what will happen if the pressure of the system is increased?

a. the reaction will not change.
b. the reverse reaction will be favored.
c. the reaction will stop completely.
d. the forward reaction will be favored.

D. The forward reaction will be favored

The left side has more molecules, so the reaction mixture will try to counter the increase in pressure by reducing pressure. The pressure reduction will be achieved by shifting equilibrium to the side with less molecules.

If the water vapor content stays the same and the temperature drops, then the relative humidity increases. its vise versa.if the water vapor content stats the same and the temperature rises, the relative humidity decreases. so, yes, i'd say that temperature and humidity have a strong relationship.

The answer is 1.82 j/g°c