How can I calculate the percent composition of C2H8N?
To find the percent composition of C₂H₈N, you divide the total mass of each atom by the molecular mass and multiply by 100 %.
% by mass =
Mass of 2 C atoms = 2 C atoms ×
Mass of 8 H atoms = 8 H atoms ×
Mass of 1 N atom = 1 N atom ×
Mass of 1 C₂H₈N molecule = (24.02 + 8.064 + 14.01) u = 46.09 u
% of C =
% of H =
% of N =