Question

3. A 134.50 g sample of aspirin is made up of 6.03 g of hydrogen, 80.70 g of carbon, and 47.77 g of oxygen. What is the percent by mass of each element in aspirin?

Answer 1

The percentage of mass of hydrogen in aspirin is 4.48%

The percentage of mass of carbon in aspirin is 60%

The percentage of mass of oxygen in aspirin is 35.5%

Step-by-step explanation:

Given that,

Mass of sample of aspirin = 134.50 g

Mass of hydrogen = 6.03 g

Mass of carbon = 80.70 g

Mass of oxygen = 47.77 g

We need to calculate the percentage of mass of hydrogen in aspirin

Using formula for percentage of mass

`\text{percentage of mass of hydrogen}=(m_(h))/(m_(s))*100`

Put the value into the formula

`\text{percentage of mass of hydrogen}=(6.03)/(134.50)*100`

`\text{percentage of mass of hydrogen}=4.48\%`

We need to calculate the percentage of mass of carbon in aspirin

Using formula for percentage of mass

`\text{percentage of mass of carbon}=(m_(c))/(m_(s))*100`

Put the value into the formula

`\text{percentage of mass of carbon}=(80.70)/(134.50)*100`

`\text{percentage of mass of carbon}=60\%`

We need to calculate the percentage of mass of oxygen in aspirin

Using formula for percentage of mass

`\text{percentage of mass of oxygen}=(m_(o))/(m_(s))*100`

Put the value into the formula

`\text{percentage of mass of oxygen}=(47.77)/(134.50)*100`

`\text{percentage of mass of oxygen}=35.5\%`

Hence, The percentage of mass of hydrogen in aspirin is 4.48%

The percentage of mass of carbon in aspirin is 60%

The percentage of mass of oxygen in aspirin is 35.5%