Question

A sample of nitrogen gas at 25°C and 745 mm Hg has a volume of 35.0 L. What volume will it occupy if the pressure rises to 1125 mm Hg at constant temperature? 1 atm = 760 mm Hg.

Answer 1

The volume that is occupied if the pressure rises to 1125 mmHg at constant temperature is 23.18 L

calculation
This is calculated using the Boyles law formula since the temperature is constant
That is P1v1 =P2V2
P1=745 mm hg
v1= 35.0 L
P2=1125 mm hg
V2=?

by making V2 the subject of the formula V2 = P1V1/P2

V2 is therefore = (745 mmhg x 35 L) / 1125 mm hg = 23.18 L