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A compound contains 6.67% hydrogen, 40.0% carbon and 53.33% oxygen.Its molar mass is 180. What are its empirical and molecular formulae?, |
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Answer» s we make a table as: Element %COMPOSITION Atomic MASS Mole Ratio SIMPLE Ratio C 40.00% 12 (40/12) (3.33/3.33)=1 H 6.67% 1 (6.67/1) (6.667/3.33)=2 O 53.33% 16 (53.33/16) (3.33/3.33)=1 ∴ Formula of compound is =CH 2 O |
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