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31 March, 15:17

2H2 + O2à2H2O

How many water molecules are created when 32 grams of oxygen react completely with 4 grams of hydrogen?

A. 2

B. 20

C. 6.02 * 1023

D. 1.2 * 1024

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Answers (1)
  1. 31 March, 19:11
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    A. 2 because for every 2 hydrogen atoms, there is 1 oxygen atom in water. If you have 4 hydrogen atoms, only 2 oxygen atoms can completely react with them.
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