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Problem: Consider this reaction 2H2 + O2 → 2H2O If 5.91 grams of hydrogen (H2) reacts with 74.22 grams of oxygen (O2), how many grams of the excess reactant remain? Use precise masses from the periodic table (all digits) and round your answer at the end of your calculations to two decimal places. 

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Problem Details

Consider this reaction 

2H2 + O2 → 2H2

If 5.91 grams of hydrogen (H2) reacts with 74.22 grams of oxygen (O2), how many grams of the excess reactant remain? Use precise masses from the periodic table (all digits) and round your answer at the end of your calculations to two decimal places. 

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Limiting Reagent concept. If you need more Limiting Reagent practice, you can also practice Limiting Reagent practice problems.

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Based on our data, we think this problem is relevant for Professor Leveritt's class at UIUC.