Aspirin is a compound with the molecular formula C9H89O4. what is it's percentage composition?

Answer 1

molecular formula for aspirin is C₉H₈O₄

9C = 9x12 = 108 g C

8H = 8x1 = 8 g H

4O = 4x16 = 64 g O

Total mass = 108 g + 8 g + 64 g = 180 g / mole

% composition is as follows:

%C = 108 g / 180 g (x100%) = 60.0%

%H = 8 g / 180 g (x100%) = 4.44%

%O = 64 g / 180 g = 35.6%