A 220.0-mL sample of helium gas is in a cylinder with a movable piston at 105 kPa and 275 K. The piston is pushed in until the sample has a volume of 95.0 mL. The new temperature of the gas is 310. K. What is the new pressure of the sample? (1) 5l. 1 kPa (2) 216 kPa (3) 243 kPa (4) 274 kPa
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