A cylinder of volume 50 L contains oxygen gas at a pressure of 2 atm.If nitrogen gas of volume 25 L and at pressure 1 atm is added to the oxygen cylinder,the new pressure is
A)2 atm
B)3 atm
C)2.5 atm
D)3.5 atm
E)4 atm

Question

Quizplus · Accepted Answer

Using the combined gas law, we can find the new pressure:
(P1V1)/T1 = (P2V2)/T2
Assuming constant temperature and solving for P2:
P2 = (P1V1 + P2V2)/ (V1 + V2)
P2 = (2 atm * 50 L + 1 atm * 25 L) / (50 L + 25 L) = 2.33 atm
Rounding to the nearest tenth, the new pressure is approximately 2.5 atm. Therefore, the correct answer is C) 2.5 atm.

A Cylinder of Volume 50 L Contains Oxygen Gas at a Pressure