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compound containing carbon and hydrogen has a molar mass of 112.21 g/molg/mol and an empirical formula of ch2ch2 . part a determine its molecular formula.



Answer :

A compound with an empirical formula of CH2CH2 has a molar mass of 112.21. Its molecular formula is: C8H16.

How to compute the molecular formula of CH2CH2?

If the empirical formula is CH2CH2 and its molar mass is 112.21 g/mol, we can determine the molecular formula of this compound with this formula:

(Empirical formula)n = molecular weight = molecular formula

First, we need to find the n value:

(Empirical formula)n = molecular weight

(CH2CH2)n = 112.21

(2(molar mass of C) + 4(molar mass of H))n = 112.21

(2(12) + 4(1))n = 112.21

28n = 112.21

n = 4

Hence, the molecular formula of this compound is:

(CH2CH2)n = (CH2CH2)4 = C8H16

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