Question

what is the formula to convert mass to moles?
a. molar mass = number of moles × mass of substance
b. number of moles = mass of substance / molar mass
c. number of moles = molar mass / mass of substance
d. mass of substance = number of moles / molar mass

Explanation:

Step1: Recall the formula for moles

The formula for the number of moles ($n$) is related to the mass of the substance ($m$) and molar mass ($M$).
The correct formula is $n=\frac{m}{M}$, which means Number of moles = Mass of substance / Molar mass.

Answer:

B. Number of moles = Mass of substance / Molar mass