USVI NGSS Science Grade 11 Practice Questions - U.S. Virgin Islands NGSS Science Summative Assessment, Grade 11 Exam

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According to the balanced chemical equation 2 H2 + O2 -> 2 H2O, how many moles of water (H2O) are produced when 4.0 moles of hydrogen gas (H2) react completely with excess oxygen gas?

4.0 moles 2.0 moles 8.0 moles 1.0 mole

Correct Answer:

4.0 moles

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