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With the temperature held constant, the pressure of a gas in a cylinder with a movable piston is increased?

from 41 kPa to 82 kPa. The initial volume of the gas in the cylinder is 0.40 m3. What is the final volume of the gas after the pressure is increased?


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The pressure has been exactly doubled. As the temperature is constant, the volume is exactly halved.

½ x 0.40 = 0.20m³