A 24 liter tank contains ideal helium gas at 27°C and a pressure of 22.0 Atm.How many moles of gas are in the tank?
A)238 moles
B)138 moles
C)17.5 moles
D)21.5 moles
E)76.0 moles

Question

Quizplus · Accepted Answer

We can use the Ideal Gas Law to solve for the number of moles of helium gas in the tank:

PV = nRT

where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.

First we need to convert the temperature from Celsius to Kelvin:

T = 27°C + 273.15 = 300.15 K

Plugging in the given values, we get:

(22.0 atm)(24 L) = n(0.0821 L*atm/mol*K)(300.15 K)

Solving for n, we get:

n = (22.0 atm)(24 L) / (0.0821 L*atm/mol*K)(300.15 K) = 21.5 mol

Therefore, the answer is D) 21.5 moles.

A 24 Liter Tank Contains Ideal Helium Gas at 27°C