3. a soil sample has a volume of 75 cm3. after being saturated with water, it weighs 173.85 g. the sample is dried in an oven; the dry weight is 158.77 g. assume the density of water is 1.00 g/cm. find the porosity.

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 =

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

Now, Porosity = , here  is volume of voids and is total volume

Porosity = = 20.107 %.

i have no idea oh hey

all fossil fuels are nonrenewable, so think coal, gasoline, things that we will eventually run out of. all fossil fuels are nonrenewable resources, but not all nonrenewable recourses are fossil fuels. these resources are not being renewed as fast as we are using them. i hope this considering there weren't any answer choices.