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Molar Mass of a Gas


In a certain lab, a mixture of three gases was collected over water into a clean, dry, evacuated glass vessel. The partial pressure of the gas mixture was measured and found to be 732.5 mmHg at room temperature.

If the temperature of the collect gas in the vessel is changed from the original temperature of 25$^o$C to 50$^o$C, how will the pressure of the vessel be affected?


The pressure of each gas will increase, but the overall pressure will remain constant.


The partial pressures of each gas will decrease, while the total pressure increases.


The partial pressures of the individual gases remain constant as well as the total pressure of the mixture.


The partial pressure of each gas increases along with the total pressure of the mixture.