True or False: Consider the following thermochemical equation: NH4Cl (s)→→ NH4+ (aq) + Cl- (aq)     ΔH = 4.72 kJ/mol The dissolution of ammonium chloride could form the basis of a first-aid instant cold pack.

Q: Classify as endothermic or exothermic (a) a combustion reaction for which ΔHΘ = -2020 kJ mol-1. (b)…

A: Concept introduction: Exothermic process is the chemical process in which heat is related to the…

Q: Zinc metal reacts with hydrochloric acid according to the following balanced equation.…

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Q: For reaction 3A + 2B → A3B2 ArtH= 745.1 kJ/(mol rxn) "A" molar mass = 271.1 g/mol; "B" molar mass=…

A: Given reaction:  3A + 2B → A3B2 Molar mass of A = 271.1 g/mol. Molar mass of B = 39.2 g/mol. No of…

Q: When 2.35g Mg(OH)2 is added to 250.0 mL of water, the temperature of the water raises from 20.5°C to…

A: Solution A standard molar reaction H, ΔrH∘ , is that the same because the molar integral reaction H…

Q: 2 CIF(g) + O2(g) 2 CIF3(g) + 2 O2(g)- 2F2(g) + O2(g) - Cl20(g) + F2(g) Cl20(g) + 3 F2O(g) 2 F20(g)…

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Q: How much heat is released at constant pressure if 12.3 mL of 0.161 M silver nitrate is mixed with…

A: Calculation for number of moles of AgNO3:

Q: Is heaven exothermic or endothermic? Is hell exothermic or endothermic?

A: Given We know about the  exothermic or endothermic

Q: Suppose you burn a 2.6 g sample of potato chips. You use the heat given off from that process to…

A: Given: The mass of the potato chips burned = 2.6 g The amount of water = 26.0 g The initial…

Q: The decomposition of ammonium chloride produces an ammonium ion and chloride ion in solution.…

A: Decomposition of ammonium chloride is an endothermic process

Q: Identify whether the following processes are endothermic or exothermic. Justify your answer. Solid…

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Q: Given the reaction: 4 Fe(s) +302(g) → 2 Fe,03(s) A H= -1652 kJ, what is the enthalpy change when…

A: Given reaction is  4 Fe(s) + 3 O2(g) ----> 2 Fe2O3(s) ; ∆H = -1652 kJ  We need to find the…

Q: How much energy is absorbed during the complete reaction of 233.0 g calcium oxide (MW = 56.08 g/mol)…

A: First convert the given mass of CaO into moles. Moles=MassMolar mass=233.0g56.08 g/mol=4.155 mol

Q: 1. Determine the amount of energy released when 93.6 g of liquid butane, C,H10(1 combusted.…

A: The given data: The mass of liquid butane = 93.6 g The enthalpy of formation of the given species is…

Q: Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions…

A: • Molar mass of iron rust (fe2O3) = 2× atomic          mass of fe + 3 × atomic mass of O.…

Q: Using the thermodynamic tables find the enthalpy of reaction for the reaction       B2H6 (g)   +   6…

A: Given reaction is : B2H6(g) +6F2(g)→2BF3(g)+6HF

Q: For the reaction Mg²+ + Cu (s) Mg (s) + Cu²“, K = 10ʻ9² and ASº = +18 J/(K-mol). 2. %3D Under…

A: You can see that this reaction is not favorable in forward direaction because if Mg metal is more…

Q: 3. one mole of 15% sulfuric acid is neutralized by 10% sodium hydroxide according to the following…

A: Here we have to determine the amount of heat released in the neutralisaton of 1mole of 15% sulphuric…

Q: Give the chemical name of the final product that will be formed by the following reaction: NaCN HA…

A: The reaction given is,

Q: What does a well-insulated calorimeter prevent from entering or leav- ing the system? A gases light…

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Q: 9. Calculate AH for the reaction 4NH3 (g) + 502 (g) → 4NO (g) + 6H20 (g), from the following data.…

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Q: 1. 1 N NAOH .N. 2. aq. HCl (workup) H3C `CO2Et

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Q: How much energy is absorbed or released when 23 g of carbon dioxide (Hfus = 8.647 kJ/mol, Hvap =…

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Q: For this question, you are trying to determine which beaker will have more heat absorbed and why.…

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

Q: Using the Table of Thermodynamic Values, determine the change in enthalpy (kJ) for the following…

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Q: Calcium hydroxide reacts with hydrochloric acid by the following equation: Ca(OH)2(aq) + 2HCI(aq) →…

A: The sign of the enthalpy of any reaction is changed if the reaction is reversed.  So if the forward…

Q: For a certain chemical reaction ?H°= -35.4 kJ and ?S°= -85.5 J/K. Is the reaction endo or…

A: in exothermic reaction heat is released from reaction. and in endothermic reaction heat is absorbed…

Q: Which of the following processes is endothermic?     a hot cup of soup (system) cools on a…

A: Answer:- this question is answered by using the simple concept of endothermic reaction in which heat…

Q: For which of the following reactions is ΔSo a positive value?

A: Entropy (S) is a measure of the probability and disorder of a system or measure of the degree of…

Q: 1.How many liters does 194.82 grams of CBr4 occupy at STP? 2.How much energy in kJ is released when…

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Q: 4. How much heat is released when 29.5 grams of Cl2 (g) reacts with excess hydrogen? H2 (g) + Cl2…

A: Given, H2(g) + Cl2(g) ➝ 2HCl(g)  ∆H° = -186 kJ Note: negative sign indicate the release of energy as…

Q: Using the thermodynamic tables and the enthalpy of formation for one mole of potassium chlorate…

A: The answer to the following question is-

Q: 7. Determining the Sign of AH Indicate the sign of the enthalpy change, AH, in these processes…

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Q: 9. Calculate AH for the reaction 4NH3 (g) + 502 (g) → 4NO (g) + 6H20 (g), from the following data.…

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Q: Which of the following processes require energy as they occur? (Select all that apply.) A clear…

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Q: True or false:  A reaction that has a Gibbs free energy of -3 kcal/mol is an endergonic…

A: Thermodynamics is branch of chemistry in which we deal with amount of heat evolved or absorbed by…

Q: Based on the enthalpy of the above reaction, what is the fuel value of glucose on a per gram basis?…

A: The reaction given is, => C6H12O6 (s)+ 6 O2 (g) ------> 6 CO2 (g) + 6 H2O (l)…

Q: What is the enthalpy change when 3.50 moles of silver chloride form? AgNO3 (aq)  +  NaCl (aq)  -->…

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Q: 5. The average fuel value of sugars is 17 kJ/g. Assuming that the sugar is the only fuel source,…

A: It is given that the average fuel value of sugars is 17 kJ/g. it implies that the average fuel value…

Q: A reaction of the following type is called H2O(g) H2O(1) AH =-44.01KJ/mol O Exothermic reaction O…

A: Given: A reaction is given. To find: Type of reaction solution: The reaction that is given is water…

Q: Describe how temperature change, both positive and negative, is a determinant of heat.    2.) If a…

A: these are multiple question . I solve first one only other part upload seperately. Thankyou

Q: 1. Cite at least three processes or reactions that require energy. 2. Cite at least three processes…

A: NOTE

Q: Identify whether the following process are endothermic and exothermic.Justify your answer. 1.…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: Suppose you burn a 2.4 g sample of potato chips. You use the heat given off from that process to…

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Q: The reaction of 10.0 mL of 0.125 M NaOH and 5.0 mL of 0.500 M HNO3 gives a temperature rise of 1.36…

A: Answer: Acid and base neutralization reaction is an exothermic reaction and heat of neutralization…

Q: Which of the following does not belong to the thermochemical process of bioenergy production? O…

A: We know, the Thermochemical conversion of Bioenergy production processes are

Q: What amount of energy is released (in the form of heat) when 60.0g of 1-pentanol reacts with oxygen?…

A: Given reaction is                                           2 CH3(CH2)4OH   + 15 O2 (g)   -->…

Q: How many grams of C,H liquid must decompose according to the following chemical equation to transfer…

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Q: How many kJ of energy are produced when 7.25 g of bromine gas reacts with excess sodium? 2 Na  +…

A: The reaction for the formation of Sodium bromide is given below : 2 Na  +  Br2   →  2 NaBr…