Calculate the volume of gas X at S.T.P. if it occupies 380 litres at 300 K and 70 cm of mercury.

Explanation

To calculate the volume of gas X at standard temperature and pressure (S.T.P.), we will use the combined gas law, which is given by the formula:

\[ \frac{P_1 V_1}{T_1} = \frac{P_2 V_2}{T_2} \]

### Step 1: Identify the given values
- Initial pressure, \( P_2 = 70 \, \text{cm of Hg} \)
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