A flexible container at an initial volume of 5.12 L contains

Question

A flexible container at an initial volume of 5.12 L contains 9.51 mol of gas. More gas is then added to the container until it reaches a final volume of 13.5 L. Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.

number of moles of gas: mol

Answer 1

With P and T constant, the ideal gas law reduces to V₂ / V₁ = n₂ / n₁ so n₂ = (9.51 mol) (13.5L) / (5.12 L) = 25.08 moles. The amount added to the 9.51 moles is therefore 15.57 moles.