Air at 293 k and 750 mm hg pressure has a relative humidity of 80%. what is its percent humidity? the vapour pressure of water at 293 k is 17.5 mm hg. (a) 80.38 (b) 80 (c) 79.62 (d) 78.51

Answer : The correct option is, (c) 79.62

Explanation :

The formula used for percent humidity is:

  ..........(1)

The formula used for relative humidity is:

      ...........(2)

where,

= partial pressure of water vapor

= vapor pressure of water

p = total pressure

First we have to calculate the partial pressure of water vapor by using equation 2.

Given:

Relative humidity = 80 % = 0.80

Now put all the given values in equation 2, we get:

Now we have to calculate the percent humidity by using equation 1.

Therefore, the percent humidity is 79.62 %

the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface.

increased stability in the completion of fluorine's outer shell.