Question

If a 50g sample of soil absorbs 15mL of water, the percentage of moisture absorption is ___%.

Answer 1

The percentage of water absorption is given by:

Percentage of Water Absorption = $\frac{\text{Weight of water absorbed in grams}}{\text{Weight of soil in grams}}\times 100$

It is given that the weight of soil taken is 50g. We have also been given the volume of water absorbed as 15mL. But to find the percentage, we need the weight of water.

It is important to know that 1mL of water weighs 1g. So, 15mL of water weighs 15g.

$\therefore$ Percentage of Water Absorption = $\frac{15g}{50g}\times 100$ = 30%