Solved: Which statement best explains why a hot-air
Chapter , Problem 9(choose chapter or problem)
Which statement best explains why a hot-air balloon rises whenthe air in the balloon is heated?a. According to Charless law, the temperature of a gas isdirectly related to its volume. Thus the volume of the balloonincreases, making the density smaller. This lifts the balloon.b. Hot air rises inside the balloon, and this lifts the balloon.c. The temperature of a gas is directly related to its pressure.The pressure therefore increases, and this lifts the balloon.d. Some of the gas escapes from the bottom of the balloon, thusdecreasing the mass of gas in the balloon. This decreases thedensity of the gas in the balloon, which lifts the balloon.e. Temperature is related to the root mean square velocity of thegas molecules. Thus the molecules are moving faster, hittingthe balloon more, and thus lifting the balloon.Justify your choice, and for the choices you did not pick, explainwhat is wrong with them.
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