A sample of gas is found to exert a pressure of 322 torr when it is in a 2.00 L flask at 100.00 oC. Compute:?

Question

A sample of gas is found to exert a pressure of 322 torr when it is in a 2.00 L flask at 100.00 oC. Compute:
A. the new volume if P becomes 476 torr and T remains unchanged.
B. the new pressure in torr if volume is reduced to 1.26 L and T becomes 50.0 oC.
C. the new pressure in torr if half the gas is removed but V and T remain the same.

Answer 1

Use Pressure x Volume = no. of moles x Gas Constant x Temp.

no. of moles and Gas Constant stay the same for parts a) and b)
no. of moles is halved for c)
You don't have to put numbers in, just put n / 1/2 (which technically means you are doubling that side of the equation)

a) (476 / 322) x 2 = 2.9565 Litres