If you burn 50.4 g of hydrogen and produce 4.50 * 102 g of water, how much oxygen reacted?

Question

Nicole Chapman

Chemistry

20 August, 03:33

If you burn 50.4 g of hydrogen and produce 4.50 * 102 g of water, how much oxygen reacted?

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Answers (1)

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Apollo · Answer 1

Moles H2O = 362 / 18.02 g/mol=20

2 H2 + O2 = 2 H2O

moles H2 = 40.5 g / 2.016 g/mol=20

the ratio between H2 and H2O is 2 : 2 so the yield is 100%

moles O2 required = 20 / 2 = 10

mass O2 = 10 mol x 32 g/mol = 320 g