Consider the reactions below. A+2B C+DAHrxn 1059.0 kJ/molrxn C+D B+EAHrxn -120.4 kJ/molrxn What is AHrxn for the reaction A+B E?

Q: Elemental iron is used in heat packs and the reaction can be represented as: 4 Fe(s) +3 O2(g) → 2…

A: When enthalpy is negative that means reaction is exothermic reaction

Q: The value of AH° for the reaction below is -482 kJ. Calculate the heat (kJ) released to the…

A: 2 CO (g) + O2 (g) →2 CO2 (g) The enthalpy of reaction ∆H° = - 482 KJ   From the above given…

Q: An unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of…

A: Density is defined as the ratio of mass of any substance to that of volume of that substance at a…

Q: Consider the following reactions: A B AGn 3 kJ/mol C- B AGrn = 37.3 kJ/mol !3! What is the value of…

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Q: In the neutralization reaction, if 30 ml of 1.5M HCI reacted with 25 ml of 2M NaOH, the final…

A: Given,The volume of 1.5 M HCl= 30 mLThe volume of 2 M NaOH= 25 mLThe increase in temperature= 7.8…

Q: Manganese reacts with hydrochloric acid to produce manganese(II)(II) chloride and hydrogen gas.…

A: Mass of Mn = 0.625 g Molar mass of Mn = 55 g/mol Mole(n) = 0.625/55 = 0.0114 mol Volume = 100 mL…

Q: The heat of formation of H2SO4 is -909.27 kj/mol. Give the thermochemical equation for the formation…

A: Here we are required to show the formation of aqueous sulphuric acid

Q: According to the following reaction, how much energy is evolved during the reaction of 72.5 g B2H6…

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Q: Consider the following reaction: 2CH₂OH(g) 2CH4 (g) + O₂(g), AH= +252.8 kJ

A: Given -> Weight of CH3OH = 27.0 gm  2CH3OH(g) ------> 2CH4(g) + O2(g) ∆H=+252.8 KJ

Q: Assume that coal is essentially all carbon and has a density of 1.5 g/mL. 1. How much heat is…

A: Given : Density of coal = 1.5 g/mL Dimensions of coal = 7 cm X 5 cm X 6 cm And coal is all carbon…

Q: 4Al(s) + 302(g)- - 2AI2O3(s) AH°rxn = -3351.4 kJ How much energy is transferred when 15.5 g of Al2O3…

A: We can solve the problem by determining the moles of aluminium oxide produced. Data given : ∆H0 = -…

Q: What mass of PCl3 would have to react in order to absorb 376 kJ of heat according to the reaction…

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Q: Determine the enthalpy for the reaction (states of matter left out) 2 SRCO3 - 2 Sr + 2 C+ 3 02 2 Sr…

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Q: The reaction written below has a ΔH of +2,662 kJ/mol          6CO2(g) + 6H2O(g) --> C6H12O6(g)…

A: Carbon dioxide reacts with water to form glucose and oxygen. The equation for the balanced chemical…

Q: Which of the following represents an endothermic reaction? CH4 (g) + 202 (g) → CO2 (g) + 2H20 (g) +…

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Q: When a 4.00 g sample of RbBr is dissolved in water in a calorimeter that has a total heat capacity…

A: First, we will calculate the enthalpy change and then convert that heat into a molar quantity. To…

Q: CO2(g) + H2(g) → CO(g) + H20(g) AH = 41.2 kJ /mol - rxn When 15g of Carbon Dioxide react with…

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Q: d) How many kilojoules of heat are absorbed when 40.5 g of MgO(s) is decomposed into Mg(s) and 02(g)…

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Q: Consider the following reaction: MgCO3 (s) → Mg0 (s) + CO2 (g) AHrxn= -20.2 kJ/mol a) Is this an…

A: a) The negative sign present in value of ∆Hrxn shows that heat is released into surroundings.…

Q: Which of the following represents an endothermic reaction? CH4 (g) + 202 (g) → CO2 (g) + 2H2O (g) +…

A: Endothermic reactions are chemical reactions in which the reactants absorb heat energy from the…

Q: In the following reaction, how much heat (in kJ) is released when 5.81 moles of CH4 are burned? CH4…

A: The balanced Chemical equation is - CH4(g) + 2O2(g) -----> CO2(g)  + 2H2O(g)  (∆H° = -802 kJ/mol)…

Q: How many grams of MgO produced during an enthalpy change of -231 kJ ? are

A: Given : ∆H = -231kJ  To calculate : mass if MgO (in g)/ mass = moles × molar mass  molar mass of MgO…

Q: A calorimeter contains 100.0 g of water at 39.8 °C. A 12.78 g object at 100.0 °C is placed inside…

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Q: A 0.75 g sample of KCl is added to 50.0 g of H20 in a Styrofoam cup and stirred until it dissolves.…

A: Given that: Mass of KCl = 0.75 g Mass of water = 50.0 g Initial temperature is 26.0oC Heat of the…

Q: Use the information provided to determine AH°rxn for the following reaction: CH4(g) + 4 Cl2(g) →…

A: Given reaction,Enthalpy of the species,Enthalpy change of the reaction = ?

Q: What mass (g) of propane, C3H8, must be burned in order to produce 76,000 kJ of energy?…

A: In a combustion reaction a hydrocarbon reacts with oxygen in presence of air to form CO2 and H2O.…

Q: Consider the following balanced combustion reaction: C7H16(l) + 11 O2(g) → 7 CO2(g) + 8 H2O(g) ΔrH°=…

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Q: The heat of combust ion of ethanol, C2H5OH(l), is-1367 kJ/mol. A batch of Sauvignon Blanc wine…

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Q: 9. Consider the reaction, 3 NO2(3) + H2O(1) 2 HNO3(aq) + NO(g), where AH = -137 kJ. How many…

A: The amount of heat released when 92.3 g of NO2 reacts according to given reaction is to be…

Q: 20) Hydrogen peroxide decomposes to water and oxygen at constant pressure by the following reaction:…

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Q: unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of combustion…

A: Enthalpy of combustion is the energy released or absorbed during the combustion reaction of any…

Q: Given the individual step reactions: 2O3(g)  ->  3O2(g)                                  ΔH = -427…

A: This can be done as

Q: 3

A: According to the equation;