What is the molar mass of a substance? a. the mass in grams of one mole of a substance b. the number of particles in one gram of a substance c. the number of moles in one gram of a substance d. the mass in grams of one particle of a substance

Option (a) is the correct answer.

Explanation:

Molar mass is defined as the mass in grams of one mole of a substance.

Mathematically,       Molar mass =

For example, molar mass of 1 mole of molecule will be calculated as follows.

             Molar mass of =

                                 =

                                 = 16 g

Therefore, 1 mole of molecules has a molar mass of 16 g.

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