Question

Starting with a 10 mL of sand and a graduated cylinder 5 mL of water is added to the sand. after waiting for the water to completely fill the sand 3 mL of water is remain above the sand what is the porosity of the sand in percent?​

Answer 1

Porosity of the sand is, 20 %.

Explanation:

So according to the question,

10 mL of sand contains (5 - 3) mL = 2 mL of water and this water fills the gaps or pores between the sand partcles. So, porosity of the sand is given by,

`\frac {2 * 100}{10}` %

= 20 %