Molar mass is a physical quantity that represents the mass of a substance per unit amount of substance. It is commonly used in chemistry to determine the weight of a specific number of atoms or molecules of a substance.

Some common examples of related units of measurements include atomic mass units (amu) for individual atoms, molecular weight for molecules, and gram-moles for compounds.

• Molar mass is crucial in stoichiometry calculations in chemistry.
• It helps in determining the amount of substance needed for a reaction.
• It is used to convert between mass and moles of a substance in chemical reactions.