Consider the following data. 2 CaO(s)  2 Ca(s) + O2(g)   H = +1270.2 kJ CO2(g)  C(s) + O2(g)   H = +393.5 kJ CaO(s) + CO2(g)  CaCO3(s)   H = -178.3 kJ Use Hess's law to calculate H for the reaction below. 2 CaCO3(s)  2 C(s) + 2 Ca(s) + 3 O2(g) H =  kJ

Q: Use standard enthalpies of formation to determine the ΔHo in kJ for the following reaction: 4NH3(g)…

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Q: The standard enthalpy change for the following reaction is -822 kJ at 298 K.2 Na(s) + Cl2(g)    2…

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Q: Calculate the standard enthalpy of formation of solid calcium carbonate (CaCO3) using the following…

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Q: Given: 4AlCl3(s) + 3O2(g) → 2Al2O3(s) + 6Cl2(g); ΔH = –529.0 kJ determine ΔH for the following…

A: The delta H for the above thermochemical reaction is given as follows

Q: The standard enthalpy change for the following reaction is 641 KJ at 298 K. Mg(s) + Cl₂(g) AH° = 641…

A: Given -> MgCl2(s) ------> Mg(s) + Cl2(g) ∆H°= 641 kJ

Q: According to Hess's law, what will be the total change in enthalpy for the reaction: C(s, diamond)…

A: According to Hess's law change of enthalpy in a chemical reaction is same regardless of whether the…

Q: Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction:…

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Q: The standard enthalpy change for the following reaction is 270 kJ at 298 K. 2 HNO3(g) N2(g) + H2(g)…

A: Heat of formation of HNO3 = -135KJ/mol

Q: A chemist measures the enthalpy change AH during the following reaction: 2 Na(s) + Cl,(g)–→2 NaCl(s)…

A: Given: ∆H for the reaction 2Na(s) + Cl2(g)----> 2NaCl(s) is -822 kJ

Q: The combustion of ammonia is : 4NH3(g)+5O2(g)--> 4NO(g)+6H2O(g)        DeltaH= -905kJ what is the…

A: Given Heat of formation data: NO(g) = 90.4 kJ/ mol H2O(g) = -241 kJ/mol 4NH3(g)+5O2(g)-->…

Q: Given : CH4 (g)  + 2 O2 (g)  -->  CO2 (g) + 2H2O (g)       Δ H = -882 kJ/mol What is Δ H for the…

A: Given : Balanced chemical equation.  To find : Enthalpy change for new generated equation.  Solution…

Q: The standard enthalpy change for the following reaction is -124 kJ at 298 K. Ag(s) + 1/2 N2(g) + 3/2…

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Q: Use Hess's Law to calculate the heat of formation of CO(g) given the following information: C(s) +…

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Q: 4NH3(g)+5O2(g)⟶4NO(g)+6H2O(g)ΔrH∘=−906 kJ/mol Calculate the energy released when 10 moles of NH3…

A: 4NH3(g)+5O2(g)⟶4NO(g)+6H2O(g) ΔH°rxn = −906 kJ From the balanced equation, it shows that 4 mol of…

Q: CaO(s)  2 Ca(s) + O2(g)   H = +1270.2 kJ CO2(g)  C(s) + O2(g)   H = +393.5 kJ CaO(s) + CO2(g)…

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Q: Calculate the enthalpy change for the following reaction: 2C(s) + H2(g) → C2H2(g) ΔH° = ??? kJ…

A: Given, Enthalpy change (∆H°) for the following reactions are given, a) C2H2(g) + 5⁄2O2(g) → 2CO2(g)…

Q: Consider this combination reaction: 2Mg(s)+O2(g)→2MgO(s); ΔH= −1204 kJ What is the enthalpy for the…

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Q: A chemist measures the enthalpy change AH during the following reaction: 2 Na(s) + Cl,(9)–→2 NaCl(s)…

A: Given, 2 Na(s) + Cl2(g) ➝ 2 NaCl(s)    ∆H = -822 kJ 2 NaCl(s) ➝ 2 Na(s) + Cl2(g)  ∆H = ? 4 NaCl(s) ➝…

Q: Suppose 23.00 g ammonium chloride (53.491 g/mol) dissolves in water in a calorimeter to form 100.00…

A: Given,Mass of ammonium chloride ( NH4Cl ) =23.00 gMolar mass of ammonium chloride ( NH4Cl ) =53.491…

Q: CaC2.  Given the thermochemical equations below, calculate the ΔHfo for acetylene in kJ/rxn.…

A: We have given that ., CaO(s) + H2O(l) --->  Ca(OH)2(s)                                 ΔH = -…

Q: Given : CH4 (g)  + 2 O2 (g)  -->  CO2 (g) + 2H2O (g)       Δ H = -882 kJ/mol What is Δ H for the…

A: Given , Chemical Reaction : CH4 (g) + 2 O2 (g) ---> CO2 (g) + 2H2O (g) With Δ H = -882 kJ/mol To…

Q: Calculate ΔH for the following reaction, CaO(s) + CO2(g) → CaCO3(s) given the thermochemical…

A: The given problem relates to Hess's law, which states that the amount of heat evolved or absorbed in…

Q: A 1.00 g sample of MgCl2 produced a 10.00 °C increased in a calorimeter charged with 40.0mL of…

A: Mass of MgCl2 = 1.00 g Increase in temperature, ΔT = 10.00 °C Specific heat of MgCl2, C = 0.750…

Q: Consider the following equations and data:  CH4(g)   +   2O2(g)    ------->     CO2(g)     +…

A: Given CH4(g) + 2O2(g) → CO2(g) + 2H2O (l) ΔH = - 890.4 kJ/mol  2H2O(l) → 2H2O(g) ΔH = +88.0 kJ/mol

Q: Calculate Δ­H for the reaction  NO(g) + O(g) → NO2(g) given the following information: NO(g) +…

A: Introduction The value of heat of reaction can be calculated by the application of Hess's Law.

Q: Find the ΔH (kJ) for the reaction below, given the following reactions and subsequent ΔH values:…

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Q: When one mole of HgO(s) decomposes to form one mole of Hg(1) and ½ mole of O2(g) the change in…

A: Answer:- This question is answered by using the simple concept of calculation of heat change using…

Q: Calculate the enthalpy change, ΔΔH, for: CCl4(l) + 4 HCl(g) ⟶⟶ CH4(g) + 4 Cl2(g)

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Q: Calculate the heat (kJ) exchanged when 3.76 mol CaCO3 is formed in the following reaction: Ca(OH)2…

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Q: SnCl2 (k) → Sn (k) + Cl2 (g) 2 SnCl2 (k) + 2 Cl2 (g) → 2 SnCl4 (s) +325.1 kJ -372.4 kJ Using the…

A: The enthalpy of a reaction provides us with the amount of energy that is used up (absorbed) or given…

Q: Consider the following thermochemical equations: C (diamond) + O2 (g) --> CO2 (g) ΔH° = –395.4 kJ 2…

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Q: Given the following two equations: 1 S(s) + 2 F2(g) ➞ 1 SF4(g) , ∆H = -774.9 kJ 2 S(s) + 3 O2(g) ➞…

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Q: The standard enthalpy change for the reaction below is ΔH°rxn = −757 kJ.  3 SF4 (g)  +  4 BCl3 (g)…

A: The balanced reaction taking place is given as, 3 SF4 (g)  +  4 BCl3 (g)  →  4 BF3 (g)  +  3 SCl2…

Q: Calculate the enthalpy change for the following reaction: 2C(s) + H2(g) → C2H2(g) ΔH° = ??? kJ…

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Q: What is the enthalpy change when 47.6 g Al completely react, given the reaction below?   The molar…

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Q: The standard enthalpy changes of formation of iron(II) oxide, FeO(s), and aluminum oxide, Al203(s)…

A: The balanced reaction taking place is given as, Given : ΔHof [FeO(s) ] = -266 KJ/mol And ΔHof…