Question

The molar mass of nitrogen (N2) is 28.02 g/mol. What is the mass, in grams, of 4.60 mol of N2?

Answer 1

28.02g ------ 1 mol
X g ------------ 4.60 mol

X = (28.02×4.60)/1
X = 128,892 g

Answer 2

Answer: 128.9 grams

Explanation: The moles of the substance is calculated by the expression :

$moles=\frac{\text {given mass}}{\text {Molar mass}}$

Given :

Molar Mass of $N_2$= 28.02 g/mol

moles of $N_2$ = 4.60

Putting in the values, we get

$4.60 =\frac{\text {given mass}}{28.02g/mol}$

given mass= 128.9 grams