A sample of helium gas occupies 14.3 L at 23°C and 0.956 atm. What volume will it occupy at 40.°C and 0.956 atm?
A) 24.9 L
B) 0.0661 L
C) 13.5 L
D) 15.1 L
E) none of these

Question

Quizplus · Accepted Answer

We can solve this problem using the combined gas law:

(P₁V₁/T₁) = (P₂V₂/T₂)

Plug in the given values:

(0.956 atm)(14.3 L)/(296 K) = (0.956 atm)(V₂)/(313 K)

Solving for V₂:

V₂ = (0.956 atm)(14.3 L)(313 K)/(296 K)(0.956 atm) = 15.1 L

Therefore, the volume of helium gas at 40°C and 0.956 atm will be 15.1 L, which corresponds to choice D.

A Sample of Helium Gas Occupies 14