The temperature and the relative humidity are `300 K and 20%` in a room of volume `50 m^(3)`. The floor is washed with water, `500 g` of water sticking on the floor. Assuming no communication with the surrounding, find the relative humidity when the floor dries. The changes in temperature and pressure may be neglected. Saturation vapour pressure at `300 K = 3.3 kPa`.

Explanation

To solve the problem step by step, we will follow the given information and apply the relevant formulas.

### Step 1: Calculate the initial vapor pressure
The initial relative humidity (RH) is given as 20%, and the saturation vapor pressure (SVP) at 300 K is 3.3 kPa (or 3300 Pa).

Using the formula for vapor pressure (VP):
\[
VP = \left( \frac{RH}{100} \right) \times SVP
...