The following thermochemical equation is for the reaction of Fe3O4(s) with hydrogen (g) to form iron(s) and water(g). Fe3O4(s) + 4H₂(g) →3Fe(s) + 4H₂O(g) ΔΗ = 151 kJ When 81.5 grams of Fe3O4(s) react with excess hydrogen (g), O. kJ of energy are Hint: An amount of energy is expressed as a positive number. The sign of AH in the thermochemical equation indicates whether the energy is absorbed or evolved.

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The following thermochemical equation is for the reaction of Fe3O4(s) with hydrogen (g) to form iron(s) and
water(g).
Fe3O4(s) + 4H₂(g) 3Fe(s) + 4H₂O(g) ΔΗ = 151 kJ
When 81.5 grams of Fe3O4(s) react with excess hydrogen (g),
kJ of energy are
0.
Hint: An amount of energy is expressed as a positive number. The sign of AH in the thermochemical equation indicates whether
the energy is absorbed or evolved.
Transcribed Image Text:The following thermochemical equation is for the reaction of Fe3O4(s) with hydrogen (g) to form iron(s) and water(g). Fe3O4(s) + 4H₂(g) 3Fe(s) + 4H₂O(g) ΔΗ = 151 kJ When 81.5 grams of Fe3O4(s) react with excess hydrogen (g), kJ of energy are 0. Hint: An amount of energy is expressed as a positive number. The sign of AH in the thermochemical equation indicates whether the energy is absorbed or evolved.
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