Question

A chemist has 2.0 mol of methanol (CH₃OH). The molar mass of methanol is 32.0 g/mol. What is the mass, in grams, of the sample?

16
30
32
64

Answer 1

64

Step-by-step explanation:

Mole of a compound = mass of a compound / molar mass of a compound

Mass of a compound = mole of a compound x molar mass of a compound

Given,

Mole of methanol = 2 mol

Molar mass of methanol = 32 g/mol

Mass of methanol = Mole of methanol x Molar mass of methanol

= 2 mol x 32 g/mol = 64 g

Therefore, the mass, in grams, of the sample = 64

Answer 2

I believe the correct answer from the choices listed above is the last option. The mass of the methanol sample would be 64 grams. It was calculated by multiplying the number of moles to the molar mass of methanol. Hope this answers the question. Have a nice day.