You may be wondering how chemists came up with a number like 6.02 x 10 23 but there is a reason! Chemists defined a mole as the amount of atoms that are in exactly 12 grams of carbon-12, which is ...

For an equation to be balanced there must be an equal numbers of atoms on each side. The mole and concentration of solutions The gram formula mass of a substance is known as the mass of one mole.

{46} \times 100 = 13\%\) Atoms and molecules are too small to count individually. Instead, chemists use a quantity called amount of substance, measured in a unit called the mole (mol). The mass of ...