A sealed gas cylinder has its volume halved while the temperature stays constant. What happens to the pressure of the gas?

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Question

A sealed gas cylinder has its volume halved while the temperature stays constant. What happens to the pressure of the gas?

Accepted Answer

B) The pressure doubles — At constant temperature, pressure and volume are inversely proportional (Boyle's Law): P₁V₁ = P₂V₂. Halving the volume means the pressure must double to keep the product constant. The average kinetic energy of molecules is unchanged because temperature is constant.

Answer

B) The pressure doubles

Answer

C) The pressure halves

Answer

A) The pressure stays the same

Answer

D) The pressure quadruples

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