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# A sample of methane, CH4, occupies a volume of 341.0 mL at 25°C and exerts a pressure of 975.0 mmHg. If the volume of the gas is allowed...?

A sample of methane, CH4, occupies a volume of 341.0 mL at 25°C and exerts a pressure of 975.0 mmHg. If the volume of the gas is allowed to expand to 558.0 mL at 298 K, what will be the pressure of the gas?

A.21.9 mmHg

B.217.0 mmHg

C.7.336*10^-5 mmHg

D.595.8 mmHg

E.4.91 mmHg

### 1 Answer

Relevance

- Roger the MoleLv 74 weeks ago
25°C and 298 K are essentially the same temperature, so the expansion was done under constant temperature.

(975.0 mmHg) x (341.0 mL / 558.0 mL) = 595.8 mmHg

So answer D.

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