A sample containing 45.0 moles of propane gas at a temperature of 25.0 °C is stored in a 15.0-liter cylinder.What is the pressure of the gas inside the cylinder?

Question

Quizplus · Accepted Answer

To solve this problem, we can use the Ideal Gas Law, which states:
PV = nRT 
where P is the pressure of the gas, V is the volume of the container, n is the number of moles of gas, R is the gas constant, and T is the temperature in Kelvin.

First, we need to convert the temperature from Celsius to Kelvin: 
T = 25.0 °C + 273.15 = 298.15 K

Next, we can plug in the given values and solve for P: 
P = nRT/V 
P = (45.0 mol)(0.0821 L·atm/mol·K)(298.15 K)/(15.0 L) 
P = 73.4 atm

Therefore, the pressure of the gas inside the cylinder is 73.4 atm, which corresponds to choice B.

A Sample Containing 45