How can I calculate the percent composition of C4H4O?
To find the percent composition of C₄H₄O, you divide the total mass of each atom by the molecular mass and multiply by 100 %.
% by mass =
Mass of 4 C atoms = 4 C atoms ×
Mass of 4 H atoms = 4 H atoms ×
Mass of 1 O atom = 1 O atom ×
Mass of 1 C₄H₄O molecule = (48.04 + 4.032 + 16.00) u = 68.07 u
% of C =
% of H =
% of O =