An evacuated tube with a volume of $400\,\text{cm}^3$ is first empty. After it is filled with gas at $300\,\text{K}$ and $101\,\text{kPa}$, its mass rises by $0.65\,\text{g}$. If the gas is assumed to obey the ideal gas equation, what is the identity of the gas?
- Aargon
- Bhelium
- Ckrypton
- Dneon