The molecular mass of octane is 114.22 g/mol. what is the mass of 22.05 mol of octane? 5.180 g 22.05 g 114.22 g 2,518 g

Correct Answer
Fourth Option, 2518 g

Solution:
The formula of number of moles (n) in terms of mass of the compound(m) and molar mass of the compound (M) can be stated as:



We have the number of moles of Octane. 
So,
n = 22.05 moles

We have the molar mass of octane.
So,
M=114.22 g/mol

Using these values in the above formula we can calculate mass of Octane (m).



Therefore, the mass of 22.05 moles of Octane is 2518 g.