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15 September, 22:08

N2 + 3H2 → 2NH3

How many grams of hydrogen, H2, are necessary to react completely with 50.0 g of nitrogen, N2?

5.4 g

28.0 g

2.0 g

10.7 g

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Answers (1)
  1. 15 September, 22:59
    0
    10.7 g of H₂. Last option

    Explanation:

    The reaction shows that 1 mol of N₂ reacts with 3 moles of hydrogen to produce ammonia.

    Let's make a rule of three with the reactant, to find the relation.

    We need to convert the mass of N₂ to moles

    50 g / 28g/mol = 1.78 moles

    The equation is: N₂ + 3H₂ → 2NH₃

    Ratio is 1:3

    1 mol of N₂ reacts with 3 moles of hydrogen to produce ammonia

    Therefore 1.78 moles will react with (1.78. 3) / 1 = 5.36 moles

    We convert the moles to mass to find out the answer

    5.36 mol. 2g / 1 mol = 10.7 g
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