Question

What is the percent composition (by mass) of carbon in C2H5NH2?

Answer 1

Answer:

53.3%

Explanation:

C:12 H:1 N:14

Mr = 2(12)+5(1)+14+2 =45

%C = Mass of carbon divides by molecular mass times 100

        2(12) divides by 45 times 100

     =53.3%