CH3COOH
Mr(CH3COOH)=1*12+3*1+1*12+2*16+1=60
w(C)=2*12/60*100%=40%
w(H)=4*1/60*100%=6,7%
w(O)=2*16/60*100%=53,3%
C3H5(OH)3
Mr(C3H5(OH)3)=3*12+5*1+17*3=92
w(C)=3*12/92*100%=39,1%
w(H)=4*1/92*100%=8,7%
w(O)=3*16/92*100%=52,2%
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CH3COOH
Mr(CH3COOH)=1*12+3*1+1*12+2*16+1=60
w(C)=2*12/60*100%=40%
w(H)=4*1/60*100%=6,7%
w(O)=2*16/60*100%=53,3%
C3H5(OH)3
Mr(C3H5(OH)3)=3*12+5*1+17*3=92
w(C)=3*12/92*100%=39,1%
w(H)=4*1/92*100%=8,7%
w(O)=3*16/92*100%=52,2%