How much energy(kJ) is released when 3.50 moles of O2(g) react with iron?

Q: How much energy is released during the formation of 98.7 g of Fe according to the reaction below?…

A: Given reaction is :  Fe2O3 (s) + 2Al (s) ----> Al2O3 (s) + 2Fe (s) , ΔHrxn = -852 KJ/mole  How…

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Q: In order to produce 823 kJ of heat, how many grams of H2 must be combusted with excess O2? (molar…

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Q: Determine the amount of heat absorbed by a solution in which 485.0 g of NH,NO3is dissolved in water.…

A: enthalpy change given in the question(+25.7kj/mol) is the amount of heat absorbed by the solution…

Q: How much energy (kJ) is released when 3.50 moles of O2(g) react with iron?

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Q: If the heat of combustion for a specific compound is -1220.0 kl/mol and its molar mass is 96.67…

A: Given ,    Specific heat of combustion =-1220 kJ/mol   Molar mass of compound = 96.67 g/mol   Heat…

Q: Consider the combustion of liquid C₅H₈ in oxygen gas to produce carbon dioxide gas and water vapor.…

A: Combustion is the reaction of a substance with oxygen. In the presence of oxygen, hydrocarbons…

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Q: from the combustion of hydrazine, N₂H4, is used to power rockets into space in the The energy…

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Q: If you have 6.0 moles of ammonia, how much energy in kJ released in the chemical reaction? N2 (g) +…

A: Answer is A) -280 kJ

Q: What is the enthalpy change when 189 g of NH3 are produced? The standard enthalpy of formation of…

A: Standard enthalpy of formation :- The enthalpy change accompanied the process of formation of one…

Q: How much heat (in kilocalories) is evolved or absorbed in the reaction of 1.00 g of Na with H2O? Is…

A: Given: Mass of Na is 1.00g. The reaction of Na with water can be represented as 2Na(s) +…

Q: What is the enthalpy of reaction (∆Hrxn)? Why is this quantity importan

A: ANSWER

Q: If the heat of combustion for a specific compound is −1370.0 kJ/mol and its molar mass is 47.85…

A: Given, Heat of combustion for specific compound , Q= -1370 kJmol Molar mass, M = 47.85 gmol Required…

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Q: If 890 kJ is released during the combustion of 1 mol of methane, what is the heat of reaction if…

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Q: A piece of unknown solid substance weighs 439 g, and requires 8427 J to increase its temperature…

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Q: Given the equation below, which of the following is true? 2 Mg(s) + O2(g) → 2 MgO(s) + 72.3 kJ 12.…

A: 2Mg + O2->2MgO+72.3KJ

Q: For the reaction H2(g) + 1/2 O2(g) --> H2O(g), DHo = -241.8 kJ. What quantity of heat, in kJ,…

A: Balanced Reaction H2(g) + 1/2 O2(g) --> H2O(g) Here heat is released during the reaction.

Q: How much heat is absorbed during production of 102 g of NO by the combination of nitrogen and…

A: Molar mass NO = 30.01 g/mol

Q: Given the following reaction, calculate the enthalpy of reaction. Identify whether the reaction is…

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Q: The reaction between nitrogen and oxygen gases require the absorption of 43 kJ of energy per mole of…

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Q: How much energy is released when 7.00 mol iron is reacted with an excess oxygen?   4 Fe+ 3 O2 → 2…

A: Given reaction is : 4 Fe+ 3 O2 → 2 Fe2O3    ...ΔH = -1652 kJ To calculate:  Energy released = ?…

Q: If the heat of combustion for a specific compound is -1090.0 kJ/mol and its molar mass is 49.47…

A: Heat of combustion of compound is - 1090.0 kJ /mol. Negative sign indicates that the heat is…

Q: For the reaction below ΔH = -296 kJ per mole of SO2 formed. S(s) + O2(g) → SO2(g) (a) Calculate the…

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Q: In winemaking, microorganisms break down the sugar in grapes into ethanol (grain alcohol) and carbon…

A: The molar mass of ethanol = 46 g  2 moles of ethanol , which weights 92.16 g produces 16.6 kcal  of…

Q: 7. How many grams of carbon dioxide would be produced from the following reaction, if 175 kJ of…

A: 2CO +O2 → 2CO2           ,   ∆H = -566 kJ2 mol CO⇔1 mol O2 ⇔ 2 mol CO2

Q: 4 PCls(s) 10 Cl₂ (g) + P4(s) AH, +1717 kJ a. How much energy is produced/absorbed by this reaction…

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Q: How much heat (in kilocalories) is evolved or absorbed in the reaction of 1.21 g of Na with H2O?…

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Q: The equation for the combustion of octane is: 20,Hmu) +250e 16CO, +18H,0 AH =-10,900 kJmol" a. What…

A: The heat of the reaction is 10900 KJmol-1 which means that 10900 KJ of heat is released when 2 moles…

Q: 8CO2(g) + S13N4(s) AH = +461.05 kJ 8CO + 2N20 + 3SIO2 a) Is this reaction exothermic or endothermic?…

A: a.) Type of reaction acb be determined form sign of ∆H of reaction.  b.) The type of reaction can be…

Q: the heat released for a complete reaction of 1 mole of carbon to 1 mole of carbon dioxide is 393kj.…

A: Given,  Given moles of carbon = 1 mole  Moles of CO2 = 1 mole  Amount of heat releases = 393 KJ…

Q: Mercury oxide (HgO) readily decomposes when heated. If it takes 90.8 kJ to decompose one mole of…

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Q: How much heat is released during the combustion of 1.24 kg of C5H12?

A: Given: 1.24 kg of C5H12 The conversion of kg into g is as follows. 1 kg=1000 g1.24 kg=1240 g

Q: Consider the reaction, C2H4(g) + H2(g) → C2H6(g), where ΔH = –137 kJ. How many kilojoules are…

A: The reaction of alkene with hydrogen is called as hydrogenation. The energy change that is…

Q: According to the following reaction, how many grams of hydrogen would be needed to produce 5.450 x…

A: In this question, we want to determine the mass of Hydrogen gas in grams unit.  You can see details…

Q: If the heat of combustion for a specific compound is -1160.0 kJ/mol and its molar mass is 92.31…

A: Given information,

Q: Consider the combustion of liquid C5H in oxygen gas to produce carbon dioxide gas and water vapor.…

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: The reaction that was on the screen when you started and its derivative demonstrate that the…

A: given, the reaction H2O(l)→H2O(g), ΔH =44.0kJ

Q: What is the change in internal energy (∆E) for a system in kJ if 2550 kJ of heat are absorbed by the…

A: Disclaimer : The problem contains multiple questions. So , we are solving only the first question.…

Q: In the reaction below, how much heat is required for the creation of 38.2 g HBr? H2 + Br2 → 2 HBr ΔH…

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Q: 140% How many Kilojoules (kj) are released when 272g of O2 is produced according to the equation. 2…

A: Given: Mass of O2 = 2.72 g Molar mass of O2 (Oxygen): 32.0 g/molMoles = Moles of O2 =  = 0.085 mol

Q: Consider the following reaction. (a) Is the reaction exothermic or endothermic? exothermic…

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Thermochemistry

Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.    

Exergonic Reaction

The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.