Question

mass percentage of carbon in CH3CONH2

Answer 1

percentage of carbon= Molecular mass of C×100/ Molecular mass of CH3CONH2

===>>>molecular mass of C=12

===>>>molecular mass of CH3CONH2

===>>>12+1×3+12+16+14+1×2=59

===>>>12×100/59=20.3

Answer 2

here is your answer ^_^

hope it will help you