If an evacuated tube with a volume of $400\,\text{cm}^3$ is filled with gas at $300\,\text{K}$ and $101\,\text{kPa}$, its mass rises by $0.65\,\text{g}$. Treat the gas as behaving ideally. What could be the identity of the gas?
- Aargon
- Bhelium
- Ckrypton
- Dneon