CAPE Physics Unit 1 · 2008 (Rest of Region) · Paper 1 · Question Q38

A container of fixed volume contains 5.0\text{ mol} of gas at a pressure of 3.5 \times 10^5\text{ Pa}. An extra 4.0\text{ mol} of gas is pumped into the container and the container is allowed to return to its original temperature. What is the final pressure of the gas?

1. (A)3.5 \times 10^5\text{ Pa}
2. (B)4.4 \times 10^5\text{ Pa}
3. (C)6.3 \times 10^5\text{ Pa}
4. (D)14 \times 10^5\text{ Pa}