Question
Jan Villaroel
Topic: Chemistry Posted 1 year ago
How many moles of oxygen will be produced by the decomposition of 7 moles of water? a. 3.5 moles b. 4.5 moles c. 3.0 moles d. 2.5 moles e. 4.0 mole

How many moles of oxygen will be produced by the decomposition of 7 moles of water?

a. 3.5 moles
b. 4.5 moles
c. 3.0 moles
d. 2.5 moles
e. 4.0 moles


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Koala Tutor
Oct 1, 2023
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The chemical reaction for the decomposition of water is:

2 H2O --> 2 H2 + O2

From the balanced equation, we can see that for every 2 moles of water, we will get 2 moles of oxygen.

So, if we have 7 moles of water, we can calculate the moles of oxygen using the ratio:

7 moles H2O x (2 moles O2 / 2 moles H2O) = 7 moles O2

Therefore, 7 moles of water will produce 7 moles of oxygen.

The correct answer is:

7 moles

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