A student boils 100 grams of water to form water vapor (gas). What method should the student use to determine that the mass of the water vapor is equal to 100 grams?
A: collecting the water vapor (gas) and cooling it back to a liquid

John was using his mp3 player when it suddenly stopped working. What is the first thing John should do to try correcting the problem?
A: recharge the battery

Which statement best explains why the Sun and the Moon appear to be about the same size in the sky?
A: The Moon is smaller in diameter and is closer to Earth than the Sun.

John was using his mp3 player when it suddenly stopped working. What is the first thing John should do to try correcting the problem?
A:
recharge the battery