In a Victor Meyer's determination of molecular mass, 0.1015 g of an organic substance displaced 27.96 mL of air at 15°C and 766 mm pressure. Calculate the molecular mass of the substance (Aqueous tension at 15°C = 16 mm).

Explanation

To calculate the molecular mass of the organic substance using the Victor Meyer method, we can follow these steps:

### Step 1: Write down the given values
- Mass of organic substance (m) = 0.1015 g
- Volume of moist air displaced (V1) = 27.96 mL
- Barometric pressure (P) = 766 mmHg
- Aqueous tension (A) = 16 mmHg
- Temperature (T) = 15°C = 288 K (since T(K) = T(°C) + 273)
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