If a sample of helium gas has a volume of 200.0mL at. 960 atm, what will the pressure be if the volume is reduced to 50.0mL (temperature and number of gas molecules remain constant) ?

Question

Kadin

Chemistry

22 January, 17:03

If a sample of helium gas has a volume of 200.0mL at. 960 atm, what will the pressure be if the volume is reduced to 50.0mL (temperature and number of gas molecules remain constant) ?

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Vincent Freeman · Answer 1

In order to calculate the pressure after the change in volume has occurred, we may apply Boyle's law, which states that the pressure of a fixed amount of gas at a constant temperature is inversely proportional to the volume of the gas. Therefore,

PV = constant

200 x 0.96 = 50 x P

P = (200 * 0.96) / 50

P = 3.84 atm