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17 November, 05:25

What amount of ammonia, NH3 (g), can be produced from 15 mol of hydrogen reacting with excess nitrogen?

3 H2 (g) + N2 (g) → 2NH3 (g)

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  1. 17 November, 09:18
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    10mol

    Explanation:

    3H2 + N2 - > 2NH3

    Stoichiometry is a tool that chemists can use to find the amount of substance present in any part of a reaction. The arrow (->) suggests that the reaction goes to completion (100%), so assume that left side = right side.

    3H2

    15 mol

    You can divide the amount of moles by the coefficient to find the number of moles when you have a coefficient of 1. This number can then be used to find the value of moles for the rest of the products/reactants:

    15/3=5mol

    NH3 has a coefficient of 2, so we have to multiply the value we got (5mol) by 2. This results in having 10mol of ammonia as the end result.
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