Question

A sample of CO2 gas which weighs 1.62 grams has a volume of 1.02 liters when collected at 20oC. What would be the pressure of the gas sample?

Answer 1

P = 0.867 atm

Step-by-step explanation:

Given data

Mass (m): 1.62 g

Volume (V): 1.02 L

Temperature (T): 20°C + 273 = 293 K

The molar mass of CO₂ is 44.01 g/mol. The moles of CO₂ are:

1.62 g × (1 mol/ 44.01 g) = 0.0368 mol

We can find the pressure of CO₂ using the ideal gas equation.

P × V = n × R × T

P × 1.02 L = 0.0368 mol × (0.08206 atm.L/mol.K) × 293 K

P = 0.867 atm