Asked by Hannah

. What is the percent by mass of nitrogen in (NH4)2CO3?

dont know how to do, please help.
Answered by DrBob222
%N = (mass N/molar mas)*100
mass N = 2*N = 2*14.00whatever N is. Look it up. Post your answer if you want us to check it for you.
Answered by Hannah
i got 29 %
Answered by DrBob222
How accurately do you want it calculated?
%N = (2*14.007/98.086)*100 = 29.155%