Determine the molecular formula of an alkane whose vapour density is 15 (H=1,C=12,R. M.M=2.VD)​

c2h6

Explanation:

molecular weight=vapour density*2=2*15=30

molecular formula=empirical formula*n

n=molecular weight/empirical formula weight=30/15=2

so molecular formula2 * (ch3) alkane =c2h6

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