What is the molecular formula of the alkene, 21.1 g of which is added with 10.7 g of hydrogen chloride?

CnH2n + HCl = CnH2n + 1 + Cl
let’s make a proportion
21.1 – 14n
10.7 – 36.6
149.8n = 770.15
n = 5
then the molecular formula of alkene will be
C5H10



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