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A compound contains 34.8% Oxygen,52.2% Carbon and 13.0% hydrogen .What is the empirical formula mass of the compound ?

$\begin{array}{1 1}(a)\;C_3H_4O(46)&(b)\;C_2H_3(43)\\(c)\;C_2H_6O(46)&(d)\;C_2H_2O(44)\end{array}$

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The empirical formula is $C_2H_6O$
Empirical formula mass=$(2\times 12)+(6\times 1)+16=46$
Hence (c) is the correct answer.
answered Oct 24, 2013 by sreemathi.v

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