A spring has a natural length of 10 cm. If a 23-N force is required to keep it stretched to a length of 39 cm, how much work is required to stretch it from 10 cm to 22 cm

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