Galena is reported to have `23.8% PbS`. Calculate the volume of oxygen required at STP to roast `10 kg` galena to `PbO` and `SO_(2)`.

Explanation

To solve the problem of calculating the volume of oxygen required at STP to roast 10 kg of galena (which is 23.8% PbS), we will follow these steps:

### Step 1: Calculate the mass of PbS in 10 kg of galena.
Given that galena contains 23.8% PbS, we can calculate the mass of PbS in 10 kg of galena.

\[ \text{Mass of PbS} = \frac{23.8}{100} \times 10,000 \, \text{g} = 2380 \, \text{g} \]
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