PROBLEM 70P

An experiment shows that a 113-mL gas sample has a mass of 0.171 g at a pressure of 721 mm Hg and a temperature of 32 °C. What is the molar mass of the gas?

Problem 70P

An experiment shows that a 113-mL gas sample has a mass of 0.171 g at a pressure of 721 mm Hg and a temperature of 32°C. What is the molar mass of the gas?

Step by Step Solution

Step 1 of 3

Let’s calculate the number of moles of the gas.

According to the ideal gas law,

...........................................(1)

Rearrange the formula is as follows.

.....................................(2)

From the given,

Volume = 113 ml

Let’s convert milliliters into liters.

Pressure = 721 mmHg

Temperature = 32