Question

How many moles of nitrogen, N, are in 71.0g of nitrous oxide, N2O?

Answer 1

Hint: Know the molar mass of N20

Answer 2

Divide 71.0 g N20 to molar mass of N20 to know the mole of N20

Answer 3

= 14.0067 g/mol
O = 15.9998 g/mol
N2O = 44.0128 g/mol

Answer 4

im still lost

Answer 5

I think it would be better if you will use 2 decimal points for us to have the same answer.
So i used
N= 14.01 g/mol
O= 16.00 g/mol
NO2= (14.01 x 2) + 16 = 44.02g/mol

wait ill post the picture

Answer 6

no. of moles=given mass in grams/molecular mass

Answer 7

just do the math. here is the equation. ;)