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Compound A consisting of carbon and hydrogen only. The compound was found to contain 80%...

Compound A consisting of carbon and
hydrogen only. The compound was
found to contain 80% carbon by mass.
(a) Calculate the empirical formula of
compound A using the data above.
(b) The relative molecular mass of
compound A was found to be 30.
Use this information to deduce the
molecular formula of compound A.
[H = 1.00 C = 12.00]?

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