posted by Mely .
Calculate the mass percent composition of carbon in the following carbon compound.
I got 0.4729 as an answer but it's wrong. Please help me.
0.4729 is correct as a fraction, convert to 47.29% by multiplying by 100.
BTW, you go to a lot of extra trouble by typing the _ to show subscripts. The tutors on the board understand that C8H12O5N is what you mean. There is a way to write subscripts but it's too much trouble to do. For example,