While researching scuba diving, Pablo reads how hot a tank should get while being filled with air. Which law best explains why the scuba tank would heat up?

A scuba tank’s volume stays nearly constant as air is forced into it. Gay-Lussac’s law says that, at constant volume, a gas’s pressure and temperature increase together. So the rising pressure during filling explains why the tank heats up; this is choice D, “Gay-Lussac’s law, because as the pressure increases, the temperature increases.”

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