Question

what is difference between mole and gram/ mole​

Answer 1

Answer:

The mole is the base unit of amount of substance ("number of substance") in the International System of Units (SI), defined as exactly 6.02214076×1023 particles, e.g., atoms, molecules, ions or electrons. Its symbol is mol. ... Thus, for example, 1 mole of MgBr2 is 1 gram-molecule of MgBr2 but 3 gram-atoms of MgBr2.

Answer 2

The term gram-molecule (g mol) was formerly used for "mole of molecules", and gram-atom (g atom) for "mole of atoms". For example, 1 mole of MgBr2 is 1 gram-molecule of MgBr2 but 3 gram-atoms of MgBr2.