What does the hydrolysis of atp do in a ca2+ pump or na+/k+ pump?

Hydrolysis of ATP provides the energy that is needed to drive the electrolytes pumps. Energy is needed for these pumps to function because they are active form of transportation which the body use to move electrolytes from one point in the body to the other.

Decomposition is the cycle at which bacteria breaks down any organic material into the soil

You use the atomic number to find out how many protons and neutrons there are in the atom. you use the atomic mass to find out how many protons and electrons there are in the atom.