How many grams of oxygen gas are required to produce 7.60 kJ of heat when hydrogen gas

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How many grams of oxygen gas are required to produce 7.60 kJ of heat when hydrogen gas burns at constant pressure to produce gaseous water?
2H2(g) + O2(g) → 2H2O(g); ∆H = –484 kJ
Liquid water has a heat of vaporization of 44.0 kJ per mole at 25C.
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General Chemistry

ISBN: 978-1439043998

9th edition

Authors: Darrell Ebbing, Steven D. Gammon

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