3. Give the number of protons and electrons in each of the following common ions: Nat. Ca²+, Al3+, Fe2+, 1.Fis?-,6?-, and N3-

Molarity is moles of solute over liters of solution. idk if that is what you are talking about, but you can convert moles of solute to grams of solute using dimensional analyzes by using molar mass found on the periodic table.

It must be measured in k.hope my answer is to you : )

They make up examples of physical properties