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Nitrogen and Hydrogen gas react to form ammonia as shown in the following reaction:
N2 (g) + 3H2 (g) = 2NH3 (g)
If a sample of 4.5 moles of hydrogen gas was reacted with excess nitrogen, how many moles of ammonia gas would be produced?

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Answer:

3 moles

Explanation:

Use a mole to mole ratio to calculate.

4.5 moles H2 x (2 moles NH3/ 3 moles H2)

= 3 moles NH3

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