Question

The volume of air inside a cylinder is $5m^3$. The amount of water vapour in the cylinder is 500 g. What is the absolute humidity inside the cylinder?

• A. $250g/m^3$
• B. $100m^3/g$
• C. $100g/m^3$
• D. $250m^3/g$

Answer 1

The correct option is C $100g/m^3$

Absolute humidity is the actual amount of the water vapour in grams present in one cubic meter volume of air. It is expressed in in unit grams per meter cube $(g/m^3)$.

So if the volume of air is $5m^3$ and the amount of water vapour is 500g, the absolute humidity will be $\left(500g\right)/\left(5m^3\right)=100g/m^3$