Question

define : i) mole ii) molar mass​

Answer 1

Answer:

1. The mole is the unit of measurement for amount of substance in the International System of Units. A mole of a substance or a mole of particles is defined as exactly 6.02214076×10²³ particles, which may be atoms, molecules, ions, or electrons. In short, for particles, 1 mol = 6.02214076×10²³.

2. In chemistry, the molar mass of a chemical compound is defined as the mass of a sample of that compound divided by the amount of substance in that sample, measured in moles. ... However, for historical reasons, molar masses are almost always expressed in g/mol.