A sample of gas has a volume of 3.91 L, a temperatureof 305 K, and a pressure of 2.09 atm. How many moles of gas are present in the sample?

Answer 1

We should use the ideal gas law equation to solve this problem.

PV = nRT

n represents the number of moles of gas

Set the problem up as shown below, and then do the calculation to solve for n.

(2.09 atm)(3.91 L) = n(0.08206 L x atm / mol x K)(305 K)