masses of 3kg on a smooth horizontal table. It is connected by a light string passing at the edge of the table to another mass of 2kg hanging vertically. When to the system is released from rest with what acceleration do the masses move

If water vapor with the mass of 35.0 grams is cooled and condensed into water in a closed system such as a closed glass jar, what is the mass of the water after the water vapor completely condenses? a) 34.5 grams b) 35.0 grams c) 35.5 grams d) the mass cannot be determined without knowing the volume