2 ´ 12.011 g/mol C = 24.022 g/mol of C2H5OH
6 ´ 1.008
g/mol H = 6.048 g/mol of C2H5OH
1 ´ 15.999 g/mol O
= 15.999 g/mol of C2H5OH
Molecular Weight = the sum = 46.069
g/mol of C2H5OH
% C = (24.022 g/mol ÷ 46.069 g/mol)
´ 102 = 52.14 %
% H = ( 6.048 g/mol ÷ 46.069 g/mol) ´ 102 = 13.13 %
% O = (15.999 g/mol ÷
46.069 g/mol) ´ 102 = 34.73 %
Sum = 100 %