A balloon that contains 0.500 L of helium at 25 °C is cooled to 11 °C,at a constant pressure. What volume does the balloon now occupy?

Question

Quizplus · Accepted Answer

The volume of a gas is directly proportional to its temperature in Kelvin when pressure is constant (Charles's Law). To find the new volume, convert temperatures to Kelvin (25°C = 298K, 11°C = 284K) and use the formula V1/T1 = V2/T2. Solving for V2 gives V2 = V1 * (T2/T1) = 0.500 L * (284K / 298K) ≈ 0.477 L.

A Balloon That Contains 0