Based on the reactions: 1. 2NO2 (2)→N204 (g) AH1 =- 57.2 kJ 2. 2NOg) + 02 (g)→2NO2 (2) AH2 = -114.1 kJ Use Hess's law to calculate H for: 2NO g) ,+02 ()→N,04 (g) AH=| kJ

Q: For the chemical reaction Ca (s) + ½ O₂ (g) → CaO (s) ∆H° = -635 kJ/mol. What is the molar enthalpy…

A: The balanced Chemical equation given in the question - Ca(s) + ½O₂(g) → CaO(s), ∆H° =-635 kJ/mol…

Q: The standard enthalpy values, Δ?∘ , for several reactions are given. H2(g)+12O2(g)⟶H2O(l)Δ?∘=−286…

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Q: Given the standard enthalpy changes for the following two reactions (1) 4C(s) + 5H2(g)–C,H10(g) AH°…

A: If the given reaction is multiplied by 2 by two, then value of the given standard enthalpy change…

Q: The molar heat capacity at constant pressure for CO(g) is 6.97 cal mol-1 K-1. How much heat in cal…

A: Data given: The molar heat capacity at constant pressure for CO(g), cp = 6.97 cal mol-1 K-1 Mass of…

Q: A reaction of 1.00 gram of NaOH with 100 mL of 1.0 M HCl in a styrofoam calorimeter causes a 10.5°C…

A: The mass (m) of the reaction solution is calculated as shown below where 100 mL is the total volume…

Q: The white pigment TiO2 is prepared by the reaction of titanium tetrachloride, TiCl4, with water…

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Q: In a constant‑pressure calorimeter, 70.0 mL of 0.850 M H2SO4 was added to 70.0 mL of 0.270 M NaOH.…

A: The reaction taking place between H2SO4 and NaOH is as follows:

Q: 4. Consider the following equations: 4 PCI; 1. P₁ + 6 Cl₂ → P₁ +50₂ → 2. P₂010 AH₁ = -1226 kJ AH₂ =…

A: Given, Enthalpy change for the few reactions are given, 1) P4 + 6Cl2  ➝ 4PCl3 ∆H1 = -1226 kJ 2) P4 +…

Q: Using the equations 2 H2 (g) + O2 (g) → 2 H¿0 (I) AH° = -572 kJ/mol Ca (s) + ½ O2 (g) → CaO (s) AH°…

A: If we multiply by any number or divide to the chemical reaction then ∆H will also multiply or divide…

Q: Using the equations 2 H2 (g) + O2 (g) → 2 H2O (1) AH° = -572 kJ/mol Ca (s) + ½ O2 (g) → CaO (s) AH°…

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Q: 11-12. The same quantity of energy is added to 25.0 g pieces of gold (molar heat capacity = 25.41…

A: Given data,Mass of Au=25gMass of Mg=25gMass of…

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

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Q: what is the change in the enthalpy in kj/kg for the complete combustion of 39.0 g of fructose,…

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Q: (1) N2(g) + 202(g)→2NO2(g) AH° = 66.4 kJ (2) 2N½0(g)2N2(g) + O2(g) AH° = -164.2 kJ what is the…

A: Given, N2(g)+2O2(g)→2NO2(g) ∆Ho=66.4kJ--------(1)2N2O(g)→2N2(g)+O2(g) ∆Ho=-164.2kJ--------(2)

Q: Nitrogen and oxygen gas combine to form nitrogen dioxide according to the reaction N2(g) + 20s(g)…

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Q: 3. The production of steel from iron involves the removal of many impurities in the iron ore. The…

A: All elements in their standard states (oxygen gas, solid carbon in the form of graphite, etc.) have…

Q: A calorimeter contains 130 g water. The calorimeter and the water inside are both at 26 °C. A piece…

A: Specific heat capacity of metal can be determined by calculating the heat loss by metal which is…

Q: For a certain chemical reaction, the AH of enthalpy is 232.4 kJ per one mole of reactant X. If 3 mol…

A: Enthalpy is the heat content of the system. For a reaction,change is energy is called enthalpy of…

Q: The enthalpy for the formation of 1 mole of NH3(aq) is -80.29 kJ/mol. What is the enthapy for the…

A: The heat of formation of a compound is defined as the heat change accompanying for the formation of…

Q: When 150 mL of 1.00 M NaOH is added to 100 mL of 1.30 M HCl in an insulated calorimeter, the…

A: To calculate the enthalpy change for the neutralization reaction, the following quantities are…

Q: Potassium nitrate, KNO,, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 20.9 g…

A: Given data : Molar mass of KNO3 (MK)= 101.1 g/mol Mass of KNO3 (mK) = 20.9 g Mass of water (mw) =…

Q: 1. When 2.00 grams of solid sodium hydroxide dissolves in 100.0 ml of water in a coffee-cup…

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Q: 1. 6FEO + 02 g) →2F@;O4 (6) 2Fe304 (3) AH=-3607.2 kJ 2. 4Fe;O4 (3) + 02 (3)→6FE;O3 (5) AH2 = +3408 3…

A: Introduction: Hess’s law states that enthalpy is a state function according to this law when a…

Q: Potassium nitrate, KNO,, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 34.4 g…

A: Given that: Mass of KNO3 = 34.4 g, mass of water = 217 g, initial temperature of water, Ti = 23.00⁰C…

Q: Si(s) + 2 F2(g)        ΔH° =  1.61×103  kJ What is the standard enthalpy change for this reaction…

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Q: What mass of aluminum metal would absorb 250.0 kJ when it melted at its melting point? The molar…

A: One gram of aluminium metal absorbs 396.6 Joule heat.

Q: Using the equations 2 H2 (g) + O2 (g) → 2 H2O (I) AH° = -572 kJ/mol Ca (s) + ½ O2 (g) → CaO (s) AH°…

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Q: Which of the following energy quantities is equivalent to 258 Cal? A. 258 cal B.1080 J C.…

A: 1 cal=4.184 joules

Q: A bomb calorimetry experiment is performed with xylose, C5H10O5(s) (molar mass = 150.13 g/mol), as…

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Q: The following two reactions are known: N2(g) + O2(g) -> 2NO(g) AH = +180.50 kJ N2(g) + 202(g) ---> A…

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Q: The molar heat capacity at constant pressure for CO(g) is 6.97 cal mol-1 K-1. How much heat in cal…

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Q: Hydrobromic acid (HBr) is a commonly used acid for adding bromine to organic compounds. As bromine…

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Q: Calculate the change in internal energy (ΔU) for a system that is giving off 25.0 kJ of heat and is…

A: The first law of thermodynamics states that the change in internal energy of a system equals the net…

Q: Using the equations 2 Fe (s) + 3 Cl, (g) → 2 FeCl, (s) AH° = -800.0 kJ/mol Si(s) + 2 CI, (g) → SICI,…

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Q: Using the equations Ca (s) + ½ O2 (g) → CaO (s) AH° = -635 kJ/mol CaO (s) + H2O (1) → Ca(OH)2 (s)…

A: Let Ca (s) + 1/2 O2 (g) → CaO (s)  ΔHo = -635 kJ/mol this be equation 1CaO (s) + H2O (l) → Ca(OH)2…

Q: Consider the following thermochemical data: Cl2(g) → 2CI(g) AH° = 242.3 kJ l2(g) → 21(g) AH° = 151.0…

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Q: When 18.5 g of HgO(s) is decomposed to form Hg(l) and O2(g), 7.75 kJ of heat is absorbed at…

A: From standard sources, we get:- Molar mass of HgO = 216.59 g/mol Amount of HgO consumed = 18.5g

Q: Benzoic acid is used to determine the heat capacity of bomb calorimeters because it can be obtained…

A: Given that : The energy of combustion (Hcombustion) = -26.43 kJ/g Temperature increase (∆T) =…

Q: Given the standard enthalpy changes for the following two reactions: (1) 4C(s) + 5H2(g)→C„H1(g) AH°…

A: ∆H° is negative means that it is e reaction  To get equation 3 we should multiply equation 2 by 2…

Q: For the chemical reaction H2 (g) + F2 (g) → 2 HF (g) AH° = -79.2 kJ/mol. What is the molar enthalpy…

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Q: The reaction of 1.00 mol of solid phosphorus with chlorine gas to form PCl3(g) releases 287.0kJ of…

A: According to the Hess's law, the total change in enthalpy during a course of a chemical reaction…

Q: Given the following data: 2NO(g), N2(g) + 2NO(g) + O2 (g) → O2 (g) → 2NO2(g), 2N2O(g) → ΔΗ 180.7 kJ…

A: The answer is given as follows

Q: The heat capacity of silicon dioxide (SiO2, 60.1 g mol-1), is 0.732 J g¬ K-1. Calculate the energy…

A: The heat capacity of SiO2 is = 0.732 J g-1 K-1 The molar mass of SiO2 is =60.1 g.mol-1 The moles of…

Q: 10.0 mol CsH20, (glucose) is combusted to carbon dioxide and water at 25C according to the equation:…

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Q: NO3KNO3 is dissolved in 229 g of water at 23.00 °C.   KNO3(s)−→−−H2OK+(aq)+NO−3(aq)   The…

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Q: Consider the following reaction: N2(g) + 3H2(g) - 2NH3(g); AH° = - 91.8 kJ The density of ammonia at…

A: Calculate the mass of nitrogen gas. Mass of nitrogen gas = Volume of nitrogen gas × Density of…

Q: Given the standard enthalpy changes for the following two reactions: (1) N2(g) + 202(g)N½O4(g) AH° =…

A: You have given a reaction that follows the Hess Law of enthalpy formation.

Q: Potassium nitrate, KNO,, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 48.7 g…

A: