Question

what is mole and molecular mass​

Answer 1

Answer:

Molar mass and molecular weight are often confused, but their values are very different. Molar mass is the mass of one mole of a substance, while molecular weight is the mass of one molecule of a substance. One mole is the number of particles, such as atoms, molecules, ions or electrons, in a substance.

Answer 2

Answer:

A mole of a substance is defined as: The mass of substance containing the same number of fundamental units as there are atoms in exactly 12.000 g of 12C. Fundamental units may be atoms, molecules, or formula units, depending on the substance concerned.

The molecular mass is the mass of a given molecule: it is measured in unified atomic mass units. Different molecules of the same compound may have different molecular masses because they contain different isotopes of an element