Ideal Gas Law Practice Test

An ideal gas sample occupies 4.00 L at 0.800 atm and 20C. What is the amount of gas present? (Use $R = 0.0821 , \text{L} \cdot \text{atm} \cdot \text{mol}^{-1} \cdot \text{K}^{-1}$.)

A student collects an ideal gas in a 5.00 L container at 1.20 atm and 127C. What amount of gas (in mol) is in the container? (Use $R = 0.0821\ \text{L\u00b7atm\u00b7mol}^{-1}\text{\u00b7K}^{-1}$.)