Ch_3-3_Combustion_Train (1)

Ch_3-3_Combustion_Train (1) - 1 molH O g molH x x mol H g...

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COMBUSTION TRAIN Also,Mg(ClO 4 ) 2 Absorbs: CO 2 H 2 O Perchlorate ion: ClO 4 -
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A 2.074 g sample of a compound containing only carbon, hydrogen, and oxygen burns in excess oxygen to produce 3.80 g of CO 2 and 1.04 g of H 2 O. Find moles and masses of each element and empirical formula. Element Moles of element in compound Grams of element in compound Relative moles of element in compound* C H O
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2 2 1 3.80 1 0.0864 1 44.0 1 molCO gm o l C x xm o l C gm o l C O = 12 1.04 g x gC mol = 2
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Unformatted text preview: 1 molH O g molH x x mol H g molH = 1.008 0.116 g x gH mol = 0.922 0.0576 1 16 g mol x mol g = Element Moles of element in compound Grams of element in compound Relative moles of element in compound* C H O 2.074 1.036 0.116 = 0.922g O 0.0864 1.50 3 0.0576 = 0.0576 1 2 0.0576 = 0.116 2.01 4 0.0576 = *small whole numbers Empirical formula: C 3 H 4 O 2...
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This note was uploaded on 03/25/2011 for the course CHEM 126 taught by Professor Biolsi during the Spring '08 term at NJIT.

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Ch_3-3_Combustion_Train (1) - 1 molH O g molH x x mol H g...

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