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01-07-2016
Chemistry

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Which of the following is NOT an empirical formula?
a) CO
b) BrCl2
c) C6H9
d) H2O

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09-07-2016

The correct answer among the choices given is option C. C6H9 is not an empirical formula. Because it can still be reduced to lower proportions. An empirical formula is a formula giving only the proportion of the elements but not the actual number of atoms.

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