Darious S.

asked • 05/08/19

2H2 + O2 ® 2H2O How many grams of oxygen gas are required to produce 90. g of water?

  1. 2.5g
  2. 80.g
  3. 5.0g
  4. 90.g

1 Expert Answer

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Lauren H. answered • 05/08/19

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7 years experience teaching High School Chemistry and Honors Chemistry

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90 g H2O x (1 mol H2O/18.02 g H2O) x (1 mol O2/2 mol H2O) x (32.00 g O2/1 mol O2) = THE ANSWER

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Lauren H.

Hi George. Put the numbers into your calculator to find the answer! 90 x 32, then divide by 18.02 x 2. Estimation can tell me that the answer is 79.9, or 80! Have a great year in Chemistry.
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03/03/20

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