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.

each chemical family is represented as a group or column on the periodic table. based on chemical properties, there are 6 types of chemical families. group 1 represents alkali metals, group 2 represents alkaline earth metals, groups 3 to 12 represent transition metals, groups 13 to 16 represent non-metals and other metals, group 17 represents halogens and group 18 represents noble gases.