We have to calculate the percentage of volume of air that is displaced when liquid nitrogen evaporates inside a closet.

**We will solve this problem through these steps:**

**Step 1:** Calculate the number of moles of nitrogen in the container.

**Step 2:** Calculate the volume of nitrogen gas using the ideal gas equation.

**Step 3:** Calculate the volume of the closet.

**Step 4:** Calculate the percentage of volume of air displaced.

A 1.3-L container of liquid nitrogen is kept in a closet measuring 1.2 m by 1.2 m by 2.0 m . Assume that the container is completely filled to the top with liquid nitrogen, that the temperature is 25.1 ^{o}C, and that the atmospheric pressure is 1.2 atm .

Calculate the percent (by volume) of air that would be displaced if all of the liquid nitrogen evaporated into the closet. The closet is ventilated such that the temperature and pressure remain constant through this process. (Liquid nitrogen has a density of 0.807 g/mL.)

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