The density of a gas at `27^(@)C` and `760 mm` pressure is `24`. Calculate the temperature at which it will be `18`, the pressure remaining constant.

Explanation

To solve the problem of finding the temperature at which the density of a gas is 18 g/L, given that its density at 27°C (300 K) and 760 mm pressure is 24 g/L, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Given Data:**
- Initial density (D1) = 24 g/L
- Initial temperature (T1) = 27°C = 300 K
- Initial pressure (P1) = 760 mmHg = 1 atm (since 760 mmHg = 1 atm)
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