Question

Are atomic mass, formula mass and molar mass the same thing?

Answer 1

Hint: The average mass of an element's atoms, measured in atomic mass units, is its atomic mass and the atomic mass of an element is a weighted average of all its isotopes, where the mass of each isotope is multiplied by the abundance of that isotope. In the chemical formula, the total average atomic masses of each atom represented is the formula mass is measured in atomic mass units. A substance's molar mass is the mass in grams of one mole of the substance.

Complete answer:
We now know what atomic mass, formula mass, and molar mass are from above.
Formula mass and molar mass are the same. However, the atomic mass is different from formula mass and molar mass.
When we say "formula mass," we usually mean the mass associated with $1$ mole of a formula; i.e. the formula's Avogadro number. The elemental makeup of substances is represented by chemical formulae. These concepts can be used by adding the average atomic masses of all the atoms to compute a substance's formula mass represented in the formula.
The mass associated with a mole of atomic species is known as atomic mass, and it is not always the same as molar mass.

Note:
It can be noted that the formula for covalent compounds represents the number and types of atoms that make up a single molecule of the material; thus, the formula mass is more appropriately known as a molecular mass. A single molecule of chloroform has one carbon atom, one hydrogen atom, and three chlorine atoms, according to its molecular formula. The sum of the average atomic masses of these atoms equals the average molecular mass of a chloroform molecule.