Question

What is the molar mass of a substance?

o the mass in grams of one mole of a substance
O the number of particles in one gram of a substance
the number of moles in one gram of a substance
the mass in grams of one particle of a substance

Answer 1

The mass in grams of one mole of a substance

Answer 2

The correct answer is: the mass in grams of one mole of a substance

Step-by-step explanation:

The molar mass of a given substance corresponds to the mass of one mole of this in grams. Corresponds to a physical property of the substance. Example: the molar mass of water (H20) is:

Molar mass H20 = (Mass H) x 2 + Mass 0 = 2 x 1 g + 16 g = 18 g / mol