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How many water molecules (H20) can be produced from 6 molecules of hydrogen gas (white) reacting with 6 molecules of oxygen gas (red)? Which reactant is the

limiting reactant?

How many water molecules (H20) can be produced from 6 molecules of hydrogen gas (white-example-1
User Hadock
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Answer:

A. 6 water molecules, hydrogen is limiting.

Step-by-step explanation:

For a molecule of water, you need 2 hydrogen atoms and 1 oxygen atom. Therefore, if there is 6 molecules of hydrogen and 6 molecules of oxygen, there are 12 atoms of hydrogen and 12 atoms of oxygen. You need 2 of hydrogen so you will divide 12 by 2. 12-2=6. You need only 1 atom of oxygen so it will stay as 12. The limiting reactant is hydrogen because there are only 6 while there are 6 atoms of oxygen remaining. There will only be 6 water molecules formed due to the insufficient amount of hydrogen.

User Mckay Multimedia
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