Science Chemistry

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The elementary analysis of 22 g hydrocarbon sample results in 18 g C and 4 g H.
a) Choose the correct chemical formula of the hydrocarbon:
i) CH4
ii) C2H4
iii) C3H8
b) What is the amount of CO2 in grams formed by the total combustion of hydrocarbon? Assume complete
combustion, meaning that only CO2 and H2O is formed.

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