Estimate the total number of air molecules (inclusive of oxygen, nitrogen, water vapour and other constituents) in a room of capacity `25.0 m^(3)` at a temperature of `27^(@) C` and 1 atm pressure. (Boltzmann constant `= 1.38 xx 10^(-23) JK^(-1))`.

Explanation

To estimate the total number of air molecules in a room of capacity 25.0 m³ at a temperature of 27°C and 1 atm pressure, we can use the formula derived from the ideal gas law:

### Step-by-Step Solution:

1. **Convert the Temperature to Kelvin**:
- The temperature in Celsius is given as 27°C. To convert this to Kelvin (K), we use the formula:
\[
T(K) = T(°C) + 273.15
...