A sample of `O_(2)` is collected over water at `22^(@)C` and 748 torr pessure. The volume of the gas collected is 82.0 `cm^(3)`. How many grams of oxygen are present in the gas?. The vapour pressure of water at `22^(@)C` is 19.8 torr.

Explanation

To solve the problem, we will follow these steps:

### Step 1: Calculate the pressure of oxygen (O₂)
The total pressure of the gas collected is given as 748 torr, and the vapor pressure of water at 22°C is 19.8 torr. The pressure of the oxygen gas can be calculated using the formula:

\[ P_{\text{O}_2} = P_{\text{total}} - P_{\text{water}} \]
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