Question

question 4 1 pts a sample of a liquid with a mass of 8.657 grams was decomposed into its elements to give 5.217 grams of carbon, 0.9620 grams of hydrogen, and 2.478 grams of oxygen. what is the percentage composition of each element for this compound? c:43.64%, h:10.21%, o:46.15% c:12.01%, h:10.10%, o:77.89% c:60.26%, h:11.11%, o:28.62% c:81.54%, h:3.69%, o:14.77%

Explanation:

Step1: Calculate percentage of carbon

Percentage of \( C=\frac{\text{Mass of }C}{\text{Total mass}}\times100=\frac{5.217}{8.657}\times100\)

$$=\frac{521.7}{8.657}\approx60.26\%$$

Step2: Calculate percentage of hydrogen

Percentage of \( H=\frac{\text{Mass of }H}{\text{Total mass}}\times100=\frac{0.9620}{8.657}\times100\)

$$=\frac{96.20}{8.657}\approx11.11\%$$

Step3: Calculate percentage of oxygen

Percentage of \( O=\frac{\text{Mass of }O}{\text{Total mass}}\times100=\frac{2.478}{8.657}\times100\)

$$=\frac{247.8}{8.657}\approx28.62\%$$

Answer:

C. \( C:60.26\%, H:11.11\%, O:28.62\%\)