11. 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?
Answers
Answer:
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%
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}=\dfrac{m_{h}}{m_{s}}\times100percentage of mass of hydrogen=
m
s
m
h
×100
Put the value into the formula
\text{percentage of mass of hydrogen}=\dfrac{6.03}{134.50}\times100percentage of mass of hydrogen=
134.50
6.03
×100
\text{percentage of mass of hydrogen}=4.48\%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}=\dfrac{m_{c}}{m_{s}}\times100percentage of mass of carbon=
m
s
m
c
×100
Put the value into the formula
\text{percentage of mass of carbon}=\dfrac{80.70}{134.50}\times100percentage of mass of carbon=
134.50
80.70
×100
\text{percentage of mass of carbon}=60\%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}=\dfrac{m_{o}}{m_{s}}\times100percentage of mass of oxygen=
m
s
m
o
×100
Put the value into the formula
\text{percentage of mass of oxygen}=\dfrac{47.77}{134.50}\times100percentage of mass of oxygen=
134.50
47.77
×100
\text{percentage of mass of oxygen}=35.5\%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%
Explanation:
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Given: 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.
To find: Percent by mass of each element in aspirin
Explanation: The formula for percentage mass of an element is:
Mass of the element * 100 / Total mass
Total mass of compound= 134.5 g
Mass of hydrogen present= 6.03 g
Mass percentage of hydrogen
= Mass of hydrogen* 100 / Total mass
= 6.03 * 100 / 134.5
= 603/134.5
= 4.48 %
Mass of carbon present= 80.70 g
Mass percentage of carbon
= Mass of carbon* 100 / Total mass
= 80.70 * 100 / 134.5
= 8070/134.5
= 60%
Mass of oxygen present= 47.77 g
Mass percentage of oxygen
= Mass of oxygen* 100 / Total mass
= 47.77 * 100 / 134.5
= 4777/134.5
= 35.52%
Therefore, the mass percentage of hydrogen, carbon and oxygen are 4.48%, 60% and 35.52% respectively.