What is the empirical formula of a compound that contains 92% carbon and 8%
hydrogen?
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A
CH
CH
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сн.
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The empirical formula of the compound is CH

Explanation:

We are provided with the information that C has 92% and H has 8% in the compound

Note % is also written in mass ie grams(g)

Molar mass of C - 12.0107

Molar mass of H - 1.00784

C. H

92g. 8g

Divided by the number of molar mass to get the number of moles

92g. 8g

12.0107. 1.00784

= 7.6598. = 7.9378

Divide through by the number of mole that has the lowest value

7.6598/7.6598 7.9378/7.6598

= 1. = 1.363

Therefore C has 1 = 1

H has 1.363 = 1

The empirical formula = CH

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