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An unknown organic compound was found to have the composition 49.31 %C, 43.79 %O   the remainder...

An unknown organic compound was found to have the composition 49.31 %C, 43.79 %O   the remainder hydrogen.
a) Determine the empirical formula of the compound.
b) If the molar mass of the unknown compound is approximately 145 g mol-1, determine the molecular formula.

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