Answer:
Porosity will be 20.107 %
Explanation:
Porosity is the portions of the rock or a sample which is not occupied by solid material. And this void space is generally filled up by liquids, such as ground water. Porosity of a sample is measured on the basis of volume of the pore space in the total volume of the sample.
We have given a soil has volume = [tex]75cm^3[/tex]
Its saturated weight is 173.85 gram
Oven dried weight is 158.77 gram
Therefore the weight of the water present in the pore space = 173.85 - 158.77 = 15.08 gram
Density of the water = 1
The volume of the water present in the pore space is = 15.08 [tex]cm^3[/tex]
Now, Porosity = [tex]=\frac{V_V}{V_T}\times 100[/tex], here [tex]V_V[/tex] is volume of voids and [tex]V_T[/tex] is total volume
Porosity = [tex]\frac{15.08}{75}\times 100[/tex] = 20.107 %.