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)    ▲H = 151 kJ When 77.6 grams of Fe3O4(s) react with excess hydrogen(g), ________, kJ of energy are (evolved or absorbed). Hint: An amount of energy is expressed as a positive number. The sign of ΔH in the thermochemical equation indicates whether the energy is absorbed or evolved.

Q: Consider the reaction below: CaCO3(s) + 2H3O+ (aq) H=15.3kJ Since AH is a positive v a Therefore,…

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Q: CH-(9) + H20(g)

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Q: The

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Q: In the following reaction, what is the quantity of heat (in kJ) released when 3.21 moles of CH4 are…

A: In the following reaction, what is the quantity of heat (in kJ) released when 3.21 moles of CH4 are…

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Q: What is the AH°rxn (kJ) for the reaction when 5.75 g of Ba(s) reacts completely with oxygen to form…

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Q: How much heat is produced by the complete reaction of 3.43 kg of nitromethane? Express your answer…

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Q: The following thermochemical equation is for the reaction of Fe3O4(s) with hydrogen(g) to form…

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Q: 6.48 1 atm and 25°C, diamond changes to graphite so slowly that the enthalpy change of the process…

A: Introduction :  We have to calculate enthalpy change for given reaction .

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Q: Given the balanced chemical equation, 2 H₂O(→ 2 H₂ (8) + O₂ (s) AHx=+572 kJ Determine the heat…

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Q: When a 9.01-g sample of solid iron(II) chloride dissolves in 55.7 g of water in a coffee-cup…

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Q: The following thermochemical equation is for the reaction of hydrogen sulfide(g) with water(l) to…

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Q: The following thermochemical equation is for the reaction of HC1(g) with O2(g) to form H₂O(g) and…

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Q: Given the data in the table below and AH°rxn for the reaction SO2C12 (g) + 2H2O (1) → H2SO4 (1) +…

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Q: Consider the reaction of nitrogen monoxide with hydrogen to form nitrogen and water vapor, H2O(g):…

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A: Note: Since you have posted multiple questions, we will provide the solution only to the first…