Molar Mass

Definition  

- The molar mass of an element or compound is its relative atomic mass (for elements) or relative molecular mass (for compounds), expressed in grams.  

- It represents the mass of one mole of a substance.  

Unit  

- The standard unit of molar mass is:  g/mol

Examples  

- Hydrogen (H): Relative atomic mass = 1 → Molar mass = 1 g/mol  

- Oxygen (O₂): Relative molecular mass = 32 → Molar mass = 32 g/mol  

- Water (H₂O): Relative molecular mass = 18 → Molar mass = 18 g/mol