Given the molar mass of the compound is 186.5 g and the empirical formula is C2H7, what is its molecular formula?

1 Answer
anor277
Nov 3, 2015

The molecular formula is always a multiple of the empirical formula.

Explanation:

So (EF)_n = MF. All we have to do is solve for n.

i.e. (2xx12.011 + 7 xx 1.00794)_n*g*mol^(-1) = 186.5*g*mol^(-1). So solve for n, and then do the product (C_2H_7) xx n to give the molecular formula. Please repost the answer here.

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