Question

We have a 3.7 L container filled with 82 g of CO gas. This container is maintained at a temperature of 298 K

a) How many moles of CO gas are in this container?
b) What is the pressure inside the container?

Answer 1

a) 2.9 mol

b) 19 atm

Step-by-step explanation:

Step 1: Given data

• Volume of the container (V): 3.7 L

• Mass of CO gas (m): 82 g

• Temperature (T): 298 K

Step 2: Calculate the number of moles (n) corresponding to 82 g of CO

The molar mass of CO is 28.01 g/mol.

82 g × 1 mol/28.01 g = 2.9 mol

Step 3: Calculate the pressure (P) inside the container

We will use the ideal gas equation.

P × V = n × R × T

P = n × R × T / V

P = 2.9 mol × (0.0821 atm.L/mol.K) × 298 K / 3.7 L = 19 atm