Question
Asked Feb 5, 2020
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A compound that contains only carbon, hydrogen, and oxygen is 68.84% C and 4.95% H by mass. What is the empirical formula of this substance?

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Expert Answer

Step 1

Given

The percentage composition of carbon (C) is 68.84%.

The percentage composition of hydrogen (H) is 4.95%

The atomic mass of carbon (C) is 12.01 g.

The atomic mass of oxygen (O) is 15.999 g.

The atomic mass of hydrogen (H) is 1.008 g.

Since the total percentage of the compound containing carbon, hydrogen and oxygen is 100%. Therefore, percentage composition of oxygen (O) is,

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Step 2

Moles of carbon, hydrogen and ox...

Chemistry homework question answer, step 2, image 1
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