Final answer:
The molar mass is the mass of one mole of atoms or molecules, expressed in grams per mole (g/mol) and correlates with the atomic, molecular, or formula mass of a substance.
Step-by-step explanation:
The molar mass is the mass of one mole of atoms or molecules and is given in grams option 4. Molar mass is defined as the mass of one mole of representative particles of a substance.
By consulting a periodic table, for instance, we can determine that the molar mass of lithium is 6.94 g, that of zinc is 65.38 g, and that of gold is 196.97 g. In each case, this quantity corresponds to 6.022 × 10²³ atoms of the element.
In summary, molar mass (M) is measured in grams per mole (g/mol or g.mol⁻¹), and it provides a bridge between the atomic scale and the laboratory scale. Option 4.