A balloon is filled with helium at sea level, and then taken into the mountains to an elevation of 7500 feet. Assuming the temperatures are the same, what will happen to the balloon?
A) The balloon will compress because the lower pressure will increase the speed of the molecules.
B) Nothing happens to the balloon because pressure has no affect on the behavior of gases.
C) The balloon expands because the molecules get bigger.
D) The balloon expands because the molecules move faster.
E) The balloon will expand because the external pressure in the mountains is lower.
Correct Answer:
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