If Charles' law describes the relationship between the temperature and volume of ideal gases, what statement is true?

Correct Answer: Option C — If the pressure remains constant, the volume of a given mass of gas is directly proportional to its temperature.

Charles' Law describes the relationship between volume and temperature for an ideal gas at constant pressure. It states that the volume of a given mass of gas is directly proportional to its absolute temperature. As the temperature increases, the gas expands, increasing the volume if the pressure remains constant.