Which device is designed to convert chemical energy into kinetic energy ? A. an A. C. Generator
B. A battery powered torch
C. a car engine
D. a wind-up mechanical clock

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