If you burn 23.4 g of hydrogen and produce 209 g of water, how much oxygen reacted?

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03-09-2017
Chemistry

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If you burn 23.4 g of hydrogen and produce 209 g of water, how much oxygen reacted?

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Erythrosin17 Erythrosin17 · Answer 1 · 2017-09-12T12:33:14+02:00

Erythrosin17 Erythrosin17

12-09-2017

The chemical reaction is expressed as:

2H2 + O2 = 2H2O

To determine the amount of oxygen used in the reaction, we use the amount of water produced and the relation of the substances in the reaction we do as follows:

209 g H2O ( 1 mol / 18.02 g ) ( 1 mol O2 / 2 mol H2O ) ( 32 g / 1 mol ) = 185.57 g O2

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