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Question
A hydrocarbon contains 4.8g of carbon per gram of hydrogen. Calculate:
find the empirical formula.
Solution 1
Element Given mass At. mass Gram atom Ratio
C 4.8 12 0.4 1 2
H 1 1 1 2.5 5
So, the empirical formula = C2H5
Solution 2
Empirical formula of compound = C : H
= 1 : `10/4`
= 4 : 10
= 2 : 5
= C2H5
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