How many moles of nitrogen, n, are in 83.0 g of nitrous oxide, n2o?

The moles of nitrogen n in 83.0 g of N2O is calculated as below

find the moles of N2O

moles = mass/molar mass

= 83 g/44g/mol = 1.886 moles

the moles of Nitrogen in N2O is therefore

=1.886 moles x2 (since there are two atom of N in N2O) = 3.772 moles