Question

We are learning about relative humidity.

1st part- what is the water vapor content at 25 degree C air if its relative humidity is 50%?

50=10/20 x 100% gives me the water vapor content of 10g/kg.

2nd part- If the air was at 25 degree C at sea level, and rises to 1,000 meters, then what will its temperature be?

It will drop by 10 degree C, so the temperature will be 15 degrees C. At 15 degree's C the vapor vapor content max capacity will be 10g/kg.

3rd Part- From part one you determined what the water vapor content of the air is, and from part 2 you determined what it's capacity is when at 1,000 meters. Now calculate the relative humidity of the air at 1,000 meters using the following formula:

Relative humidity =(water vapor content / water vapor capacity) x 100

Part 3 is where I am confused. I am not understand what my numbers are from above in order to set up my formula.

Answer 1

Answer to part 3:

From part 1, we found out that water vapour content = 10g/kg

From part 2, we found out that the maximum water vapor capacity = 10g/kg

So, the required relative humidity at 1000 metres = water vapor content / water vapor capacity * 100 = 10/10 * 100 = 100%