Copper Bromine Helium

Q: methanol, CH3OH, vaporizes at 25°C is 35.4 kJ/mol. What is the entropy change (in J/K) when one mole…

A: Given,   □Hvap = 35.4 kJ/mol T = 25 °c = 298 K □S = □H/T   = 35.4 ×1000/298 = 118.79 J/K-mol

Q: Calculate ΔrH° for the combustion of methane gas, CH4 : CH4(g)  +   2 O2(g)  →   CO2(g)  +  2…

A: Given  CH4(g)  +   2 O2(g)  →   CO2(g)  +  2 H2O(g) molecule                                  ΔfH°…

Q: When solid sodium chloride is cooled from 25°C to 0.°C, the entropy change is –4.4 J/mol. K. Is this…

A: Entropy is a measure of the degree of disorder or randomness in a system. It is a thermodynamic…

Q: Consider the following reaction: 2 NO(g)  N2(g) + O2(g) The enthalpy change at 298 K for this…

A: The given equilibrium reaction is  2 NO(g) ---------->  N2(g) + O2(g) The enthalpy change at 298…

Q: Calculate ΔrHΔrH for the following reaction: CaO(s)+CO2(g)→CaCO3(s) Use the following reactions…

A: 1- First reverse the Last equation : 2CaO(s) ------> 2Ca(s) + O2(g)..... (4)  ∆H1 = +1269.8…

Q: Toluene has a normal boiling point of 101.4 ℃ and its ΔHvap is 33.8 kJ/mol. Calculate the molar…

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Q: Calculate ∆Gº for the reaction, 2C2H6(g)+5O2(g)→4CO(g)+6H2O(g), given ∆Gºf for C2H6(g)=-32.9 kJ/mol,…

A: 2C2H6(g)  +  5O2(g)  →  4CO(g)  +  6H2O(g) ∆Gºf for C2H6(g)=-32.9 kJ/mol, ∆Gºf for CO(g)=-137.2…

Q: at what temperature will this reaction be exactly at equilibrium?

A: Enthalpy change (∆Ho)=-162.2 kJ =-162.2  X 103J Entropy change (∆So)=104.2 J/K ∆Go=0 at equilibrium…

Q: Calculate ΔrH for the following reaction: P4(g) + 10Cl2(g) → 4PCl5(s) Express your answer to 4…

A: The thermochemical equations can be treated as algebraic equation which can be added,  subtracted,…

Q: Calculate the ∆H°rxn for the reaction C(graphite) + 2H2(g) → CH4(g) from the following enthalpy…

A: ∆H°rxn can be calculated from the enthapy change of the given reactions. If the reaction is…

Q: Oxygen (O₂) is necessary for cellular respiration; it must be transported from the lungs to tissues…

A: There is following relationship between Gibbs free energy change and Equilibrium constant - ∆G° = -…

Q: thermochemical equation

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Q: What is the entropy change (in J/K) associated with the formation of 15.0 g of SO2 for the reaction…

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Q: Hydrogen cyanide is a highly poisonous, volatile liquid. Determine the ΔH for the reaction that…

A: Hess's Law of Constant Heat Summation: If a reaction occurs in multiple stages or steps, the total…

Q: Using enthalpies of formation (See the Supplemental Data), calculate ΔH° (in kJ) for the following…

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Q: Using enthalpies of formation (See the Supplemental Data), calculate ΔH° (in kJ) for the following…

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Q: Calculate ΔHrxn for the following reaction: BaO(s)+CO2(g)→BaCO3(s)   Use the following reactions…

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Q: For a particular reaction at 148.1 °C, Δ?=−1428.51 kJ, and         Δ?=393.69 J/K  .  Calculate Δ?…

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Q: Calculate the entropy change (in J/K) that occurs when 31.7 g of ice melts at its normal melting…

A: we have to calculate the entropy change

Q: Calculate ∆H for the reaction 4NH3 (g) + 5O2 (g) → 4NO (g) + 6H2O (g), from the following data. N2…

A: To get the required reaction4NH3→2N2+6H2    ∆H=2×91.8=183.6KJ2N2+2O2→4NO…

Q: A particular reaction has a ΔHo value of -141. kJ and ΔSo of -104. J/mol K at 298 K. Calculate ΔGo…

A: We are given :648. K Change in enthalpy (ΔHo)  =   -141. kJ change in entropy (ΔSo)  = -104. J/ K =…

Q: Calculate the standard change in Gibbs free energy, Δ?∘rxn , for the given reaction at 25.0 ∘C .…

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Q: Oxygen (O₂) is necessary for cellular respiration; it must be transported from the lungs to tissues…

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Q: Calculate ∆H for the reaction 2 Al(s) + Fe2O3(s) → 2 Fe(s) + Al2O3(s) given the following data:…

A: Given :-  Equation ∆H 2 Al(s) + 3/2 O2(g) → Al2O3(s) -1601 kJ 2 Fe(s) + 3/2 O2(g) → Fe2O3(s)…

Q: Calculate the ΔH for the reaction: C2H4 (g) + H2 (g) --> C2H6 (g), from the following data:   C2H4…

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Q: Use the thermodynamic data below to answer the following questions regarding this chemical reaction:…

A: Thermodynamics is branch of science that involves the study of heat, work, temperature and energy.…

Q: Calculate ΔH for the reaction; 4NH3(g) + 5O2 (g) => 4NO (g) + 6H2O (g) , from the following data.

A: 2N2 (g) + 2O2 (g) => 4NO(g)   ........equation(1) 6H2 (g) + 3O2 (g) => 6H2O(g)…

Q: phorus oxychloride (POCl3) is a chlorinating agent that is frequently used in organic chemistry

A: We have to tell whether reaction is spontaneous

Q: HI has a normal boiling point of -35.7 and its ΔvapH is 21.16 KJ/mol. Calculate the molar entropy…

A: Chemical thermodynamics is branch of chemistry in which we deal with amount of heat evolved or…

Q: A 80.0 mL sample of 0.300 M aqueous hydrochloric acid is added to 80.0 mL of 0.300 M aqueous ammonia…

A: The objective of this question is to calculate the enthalpy change (ΔrH) per mole of HCl and NH3…

Q: Given the following equation, H2O(g) + CO(g) → H2(g) + CO2(g)             ΔG°rxn = -28.6 kJ…

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Q: Above what temperature (in Kelvin) does the following reaction become nonspontaneous?   FeO(s) +…

A: if ΔH and ΔS are both negative , so spontaneous at low temperature , non spontaneous at high temp.…

Q: Calculate ΔGo for the following reaction given the following thermodynamic properties at 25oC:…

A: Since, From Gibbs-Helm Holtz equation, ∆G° = ∆H° - T∆S° Thus,

Q: Given the following equation, H2O(g) + CO(g) → H2(g) + CO2(g)             ΔG°rxn = -28.6 kJ…

A: The reaction given is 1) H2O(g) + CO(g) → H2(g) + CO2(g)                                 ΔG°rxn =…

Q: Given ΔG∘rxn=103.7 kj/mol for N2O(g) and ΔG∘rxn=-520.3 kj/mol for BaO(s), calculate ΔG∘rxn for the…

A: Given : ΔG∘rxn=103.7 kj/mol for N2O(g)  ΔG∘rxn=-520.3 kj/mol for BaO(s), calculate ΔG∘rxn .

Q: Consider the following reaction.  Use the information here to determine the value of ΔSsurr at 355…

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Q: Calculate ∆H°25° for the reaction: Fe3O4(s) + 2 C(s, graphite) → 3 Fe(s) + 2 CO2(g) from the…

A: The given reaction is, Fe3O4(s) + 2 C(s, graphite) → 3Fe(s) + 2CO2(g)   The given reactions are, 1)…

Q: When 4.20 g of solid NH4NO3 dissolves in 50.0 g of water at 26.8°C in a calorimeter, the temperature…

A: The heat of a substance is given as:

Q: Ice is heated at a constant pressure until it melts and vaporizes. What signs are associated with…

A: Ice is heated at a constant pressure until it melts and vaporizes.What signs are associated with the…

Q: The enthalpy change (ΔHrxn) for a certain reaction is 700.0 kJ/mol.  The same reaction has an…

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Q: Given the particulate models here that depict Cu in solid form, Br2 in liquid form, and He in…

A: The change in entropy of copper when converted to a gas :Given:S° for Cu(s) = 33.2 J/(mol•K)S° for…

Q: Calculate ΔrH° for the combustion of methane gas, CH4 : CH4(g)  +   2 O2(g)  →   CO2(g)  +  2…

A: The standard enthalpy change for the formation of one mole of a compound from its elements in their…

Q: Ozone (O3) in the atmosphere is subject to reaction with nitric oxide (NO) as O3(g)   +  NO(g)   ->…

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Q: Calculate the ∆H°rxn for the reaction C(graphite) + 2H2(g) → CH4(g) from the following enthalpy…

A: The enthalpy of overall reaction is the sum of enthalpy changes that occur during the reaction. The…

Q: You discover a new chemical reaction that has a standard entropy change equal to 167.1 J/mol•K and a…

A: