0.2313 g of an organic substance gave 40 ml of moist nitrogen measured at `15^(@)C` and 745 mm pressure. Calcualte the % of nitrogen (Aq tension at `15^(@)C` is 12.7mm)

Explanation

To calculate the percentage of nitrogen in the organic substance, we will follow these steps:

### Step 1: Calculate the Partial Pressure of Nitrogen
Given:
- Total pressure (P_total) = 745 mmHg
- Vapor pressure of water at 15°C (P_water) = 12.7 mmHg

Using the formula:
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