Atomic Mass Number of Protons

Number of Neutrons

Number of Protons
Number of Neutrons

Atomic mass is the quantity of matter contained in an atom of an element.

To calculate atomic mass you should use the following formula:
mass number = protons + neutrons

The atomic mass is used in order to find the average mass of elements and molecules and to solve stoichiometry problems.

Other people also used:

The boiling point elevation is the increase in the boiling point of a solvent when the solute is added to the solution.

It's a general method in analytical chemistry that measures the concentration of a substance in an unknown sample.

The degree of unsaturation is a calculation that counts the total number of rings and π bonds.

The enthalpy is the sum of the system's internal energy and the product of it's pressure and volume.