What is the percentage of nitrogen in N2O?

Answer 1

[(2*atomic mass N/molar mass O2)]*100 = ?

Answer 2

44.013 g/mol ?

Answer 3

Is that your answer? The molar mass N2O was not the question.

Answer 4

63.648% this is my answer

Answer 5

I have the same answer and that will be ok. If your prof is picky about significant figures s/he may have issue depending upon the numbers you used to make that calculation.