Question

How many moles of nitrogen, N , are in 69.0 g of nitrous oxide, N2O ?

Answer 1

moles N₂O = 69 : 44 g/mol = 1.568

N₂O : 2 moles N, 1 mole O

moles N = 1.568 x 2 = 3.136

Answer 2

1.57

Step-by-step explanation:

moles = mass / molar mass

moles = 69 / 44.013

moles = 1.57