You just switch them around
Generally, 60% of the mass of body is water.
So, amount of water in 100 kg person is:

In order to calculate the mass of a person if all the water were removed, then:

Mass of the body =
[
Mass of the content of water in the body = 
Substituting the values:
Mass of a person if all the water were removed =
.
Hence the mass of a person who weighs
will weigh
if all the water were removed from the body.
Gravity. The rock is being pushed down and you are counteracting that force with a crowbar pushing it upward.
Answer:
Depends on molecule.
Explanation:
The number of the polypeptide chains present in the oligomer depends on the molecule. Some molecules have more polypeptide chains whereas some of them have less polypeptide chains. For example, Hemoglobin is a oligomer that consists of four Polypeptide Chains, two of these Polypeptide Chains are α-globin molecules, each comprise of 141 amino acids, and the other two are (β, γ, δ, or ε) globins, each consist of 146 amino acids.