To find the relative humidity of a closed system with given temperature and masses of water vapor and liquid water, we can calculate the ratio of vapor density to saturation vapor density. By using the information provided and a table, we can determine the relative humidity of the system. If the temperature changes, we can repeat the calculations to find the new relative humidity.
The relative humidity of a closed system can be determined by calculating the ratio of vapor density to saturation vapor density.
In this case, the vapor density is given as 10g/1000cm³ and the saturation vapor density can be found using the information in Table 13.5 at the given temperature of 15 degrees Celsius. By comparing these values, we can determine the relative humidity of the system.
(ii) To find the new relative humidity when the temperature drops to 5 degrees Celsius, we need to repeat the same steps as before, but using the new temperature value and the given masses of water vapor and liquid water.