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?

P = 0.867 atm

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