Question

Asprin is a compond with the molecular formula, C9H8O4. What is the percent composition?

Answer 1

Answer:

Oxygen       35.6 percent

Carbon        60 percent

Hydrogen    4.4 percent

Explanation:

Molecular mass of aspirin$(C_9H_8O_4)=180 gm/mol.$

Mass of carbon in 180 gm of aspirine$=12\times 9=108\ gm.$

Therefore, percentage of carbon in aspirin is $=\dfrac{108}{180}\times 100=60\ percent.$

Similarly, mass of hydrogen in 8 gm of aspirine$=1\times 8=8\ gm$.

Hydrogen's percentage in aspirin$=\dfrac{8}{180}\times 100=4.4\ percent.$

Also, mass of oxygen in aspirin is $=16\times 4=64\ gm.$

Oxygen's percentage in aspirin$=\dfrac{64}{180}\times 100=35.6\ percent.$

Hence, this is the required solution.