Consider the following numbered processes: 1. A → 2B 2. B → 2C + D 3. E → 2D ΔH for the process          A → 4C + E is A. ΔH1 + ΔH2 + ΔH3 B. ΔH1 + ΔH2 C. ΔH1 + ΔH2 − ΔH3 D. ΔH1 + 2ΔH2 + ΔH3 E. ΔH1 + 2ΔH2 − ΔH3 please explain the steps

Q: Of the situations given below, which ones imply that ΔUsys must be positive? I.  work is done on the…

A: The symbol ΔUsys represents the change in internal energy of a system. In thermodynamics, the…

Q: 3Cu2+(aq)+2Fe(s)↽−−⇀3Cu(s)+2Fe3+(aq) ΔrH∘=−288kJ/mol What is the value of ΔrG?

A: 3Cu+2 (aq)+2Fe(s)↽−−⇀3Cu(s)+2Fe+3 (aq) ΔHorxn =−288kJ/mol

Q: From the ∆H calculated above and the number of moles of acid neutralized in each case, calculate the…

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Q: The combustion of diborane, B2H6B2H6 at constant pressure, proceeds according to the equation…

A: The enthalpy of formation of B2H6 is 31.46 KJ/mol or 0.03146 MJ/mol.

Q: Why is it often more convenient to measure ∆H than ∆E?

A: ∆H is equal to heat change at constant pressure and ∆E is equal to heat change at constant volume.…

Q: For the reaction Na₂CO3 + 2HCl-NaCl + CO₂ + H₂O ΔH is -144.1 kJ. What is ΔU

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Q: The conversion of oxygen into ozone in the upper atmosphere is as follow :  3232 O2(g) → O3(g),…

A: The enthalpy of a chemical reaction and phases transition do vary with temperature. Although the…

Q: ( 51 FQ² 3 4 0 1 The diagram shows G versus Q at 25°C for H₂O() = H₂O(g) At which point does the…

A: Answer:For any reaction, value of reaction quotient is always equal to the ratio of partial pressure…

Q: Consider the following generic reaction: A+2B→C+3DA+2B→C+3D, with ΔHΔH = 125 kJkJ . Determine the…

A: Here we use the concept of chemical reaction and value of delta H.

Q: Which of the following processes would you predict to have the most favorable ΔSº?     CH3OH(g)  →…

A: Entropy  It is defined as the randomness present in the system. If the randomness is more then…

Q: 8.If given 30.0oC, what would that value be in Kelvin?  a T = 303 K  b T = 243 K  c T = 330 K  d T…

A: Temperature = 30°C  In kelvin = ?

Q: At 298 K, the following heats of reaction are known: S (s) + O2 (g) → SO2 (g) ΔH = −296.1 kJ 2 SO3…

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Q: Which of the following processes are endothermic? O None of the above are endothermic. O2 Br(g)…

A: The energy difference between the products and reactants is known as the energy change of a…

Q: Which of the following reactions will ∆H = ∆U? a. H2(g) + Br2(g) ⟶ 2HBr(g) b. CH4(g) + 2 O2(g) →…

A: Which of the following reactions will ∆H = ∆U?

Q: To calculate Δ?rxn = Δ?rxn° + RTln Q ; how would I calculate for Q?

A: how would I calculate for Q?

Q: Calculate the unknown ΔrS° using the following information: A + B → 2D ΔrS° = ? C→1⁄2B+D…

A:

Q: A 465 g sample of iron is removed from a hot oven and plunged directly into 375 mL of water in an…

A: Specific heat is the amount of heat required for a unit mass of a substance to raise the temperature…

Q: 2A + B → 2C ∆H1 = -115.2 kJ B + D → C ∆H2 = -98.4 kJ 2A → B + 2D ∆Hrxn = ?

A: The heat of the desired reaction can be calculated by rearranging the heats of the given reactions.…

Q: A 2.55 mol sample of an ideal gas is allowed to expand adiabatically and reversibly to twice its…

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Q: Which of the following processes is EXOTHERMIC? Ca(s) → Ca(l) None of the other choices are…

A: NOTE: In the last option, the reactant should be LiCl and not KBr as the product ions are Li+ and…

Q: Consider freezing a 20 cm x 20 cm x 20 cm cube of water. Calculate AH, AU, q, and w for the process.…

A:

Q: The conversion of graphite to diamond involves an internal energy change (ΔU) of 5.1 kJ mol-1 and a…

A: Given that, for the conversion of graphite to diamond involves an internal energy change (ΔU) of 5.1…

Q: 1. Calculate AH for the reaction: C2H4 (g) + H2 (g) ing data. a. C2H4 (g) + 3 02 (g) → 2 CO2 (g) + 2…

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Q: Which of the following would be a system that has work done on it by the surrounding? a. CH, (g) CO,…

A: When ∆H is negative value, then it is an exothermic reaction.When ∆H is positive value, then it is…

Q: A NASA spacecraft measures the rate R at which atmospheric pressure on, Mars decreases with…

A: We…

Q: 15. When two systems are in contact with each other, energy will move between them to reach…

A:

Q: "Strike anywhere" matches contain P4S3, a compound that ignites when heated by friction. It reacts…

A:

Q: follow to calculate the value of ΔH° for the reaction: 4 B  2 A + C + 2 F A + 2B   E       ΔH° =

A: Using Hess's law,  Enthalpy of a reaction is always remains constant whether reaction completes in…

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

A:

Q: Use Hess' Law to find the ΔH°rxn for P4 + 10Cl2  → 4PCl5

A: Given: PCl5 → PCl3 + Cl2    ΔH°rxn = +157kJ        P4 + 6Cl2  → 4PCl3   ΔH°rxn = -1207 kJ To…

Q: Calculate the change in enthalpy for the following reaction: A + 3B → D ∆Hrxn =? Given: 3A + 12B →…

A:

Q: Use the thermochemical data that follow to calculate the value of ΔH° for the reaction: 4 B  2 A + C…

A: Thermochemistry can be defined as the branch of chemistry that deals with heat energy associated…

Q: Consider the following numbered processes:   A → 2B B → 2C + D E → 2D…

A: Solution 1. A --> 2B let enthalpy is deltaH1 2. B -->2C + D let enthalpy is deltaH2 3. E…

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

A: The reaction enthalpy, ∆H, is the energy that is involved in carrying out a reaction. Energy may be…

Q: Compound Δ?∘f (kJ/mol)Δ⁢Gf∘ (kJ/mol) A +387.7+387.7 B +600.4+600.4 C +402.0+402.0 Use the data given…

A: Ans given below

Q: Substance C3H4 (g) H₂(g) CsHs (9) Calculate AS for C3H4(g) + 2 H2(g) →→→ C3H3(g). S° (J/mol-K) 266.9…

A: We have been given values of standard entropies of each reactant and product species involved in…

Q: Matter can change from one physical state (phase) to another without any change in chemical…

A: For each phase change, determine the sign of ΔPCH and ΔPCS. Use ΔH<0, ΔH>0, ΔS<0 and…

Q: Classify each process as endothermic or exothermic. What is thesign of ∆H for each process? Explain…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: Determine the ΔSsystem given the reaction. C6H12O6(s) + O2(g) ----> CO2(g) + H2O(l).

A: Given,  C6H12O6(s) + O2(g) ----> CO2(g) + H2O(l). The ∆s(system) equals to:

Q: A certain liquid has a vapor pressure of 92.0 Torr at 23.0 ∘C and 215.0 Torr at 45.0 ∘C. Calculate…

A: Given : Vapour pressure of liquid at 23 oC = 92.0 torrAnd vapour pressure of liquid at 45.0 oC =…