Question

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

Answer 1

Molar mass also called Atomic mass is the atomic weight. You can find this on the periodic table.
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The answer would be
A. the mass in grams of one mole of a substance

Answer 2

Answer: Option (a) is the correct answer.

Step-by-step explanation:

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

Mathematically, Molar mass =
`(mass in grams)/(moles of substance)`

For example, molar mass of 1 mole of
`CH_(4)` molecule will be calculated as follows.

Molar mass of
`CH_(4)` =
`mass of carbon atom + 4 * mass of hydrogen atom`

=
`12 + 4 * 1`

= 16 g

Therefore, 1 mole of
`CH_(4)` molecules has a molar mass of 16 g.