Solved: Which statement best explains why a hot-air balloon rises when the air in the

Chapter 13, Problem 6

(choose chapter or problem)

Which statement best explains why a hot-air balloon rises when the air in the balloon is heated? a. According to Charless law, the temperature of a gas is directly related to its volume. Thus the volume of the balloon increases, decreasing the density. b. Hot air rises inside the balloon, which lifts the balloon. c. The temperature of a gas is directly related to its pressure. The pressure therefore increases, which lifts the balloon. d. Some of the gas escapes from the bottom of the balloon, thus decreasing the mass of gas in the balloon. This decreases the density of the gas in the balloon, which lifts the balloon. e. Temperature is related to the velocity of the gas molecules. Thus the molecules are moving faster, hitting the balloon more, and lifting the balloon. For choices you did not pick, explain what you feel is wrong with them, and justify the choice you did pick.