Consider the first three written formulas, and then use Hess’ law to find the change in enthalpy , ΔH° , at 25°C for the written equation.

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A: Many reaction are not possible to occur because the reactant molecule not have sufficient energy to…

Q: QUESTION 2 What is the role played by NO in the following mechanism? 03 + NO NO2 + 02 NO2 + O→ NO +…

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Q: Ex 12. If a galvanic cell consists of cadmium and lead electrodes immersed in monomolar solutions of…

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Q: Determine the mass (grams) of a nonvolatile, nonionizing compound that must be added to 1367.8 g of…

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Q: (b) The esterification reaction above was carried out in the presence of hydrochloric acid as the…

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Q: risma (NH2C(CH2OH)3) is a weak base and is a commonly used buffer. It has a molecular weight of…

A: For a buffer- pH = pKa + log [Base/Acid]   Also, No of moles = Mass / Molar mass Molarity = Moles /…

Q: 4). prepare the following compound Reagent necessary. * ethyl 3-hydroxy-3-methyl butanoate…

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Q: On a clear day at sea level on Planet Y with a temperature of 25 °C, the partial pressure of N2 in…

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Q: 7-Identify the following atoms or ions f a) atom: 1s 2s 2p 3s 3p 4-

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Q: 12 60 70 8 9 10 110 13 140 3 2 5 QUESTION 2 What is the role played by NO in the following…

A: Note- The given question is a multiple question, hence I solved first question according to rules of…

Q: 1) 3) 5) Br CN SH OH

A: o NH2 is ortho/para directing o Alkoxide reacts with alkylhalide to produce ether o Na2S reacts with…

Q: Calculate for for the pH, pOH, [H+] and [OH-] for a solution that is 0.025 %w/v HCl. concentrations

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Q: Initially, 2.25 mol of carbon monoxide gas, CO(g), and 2.25 mol of water vapour, H₂O(g), are placed…

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Q: Given: SrBr2 What is the type of chemical bond? • If ionic bond, show the reaction or process of…

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Q: Complete these reactions: CI 9. 10. 11. NO₂ AICI 3 H₂SO4 Br₂ AICI3

A: “Since you have asked multiple question, we will solve the first three question for you. If youwant…

Q: a) calculate the packing efficiency of a body-centred cubic structure. (show working) b) the…

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Q: (c) Another alkene is propene, C.H. Describe the mechanism for the addition reaction of propene with…

A: Given,  The addition reaction of propene (C3H6 ) with Br2 is:

Q: The reaction below has Kp = 8.90 at 25°C. Br₂(g) + Cl₂(g) = 2 BrCl (g) If a sealed container…

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Q: The concentration of some element A decreases from 0.350M to 0.212M from 2 seconds to 6 seconds in a…

A: Rate of a reaction difined by change in concentration with time.

Q: Select the structure that is identical to the structure in the box. B O A O C o None of the…

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Q: What is the correct structure for 1-bromo-2-ethylcyclopentane? Br b) a) CH₂CH3 c) CH₂CH3 Br Br…

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Q: 9. Nitric oxide, NO, reacts with hydrogen to give nitrous oxide, N,O, and water. 2NO+H₂> N₂O + H₂O…

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Q: Quien at noe 2 H₂0₂ (ar) → 2H₂0 (1) + 0₂ (g) Orien Laty [H₂0₂] M 1.22x10-2 8.04 x 10-3 5.30x10-3…

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Q: If a solution containing 53.99 g of mercury(II) chlorate is allowed to react completely with a…

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Q: Using Curved Arrow Formalism, what is the reaction of 1-chloro-1-methylcyclopentane treated with…

A: Given in following question reaction write curve arrow machenism 1 chloro 1 methylcyclopentane…

Q: Calculate the molar mass for each of the following gases given the STP density methylene chloride…

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Q: 5. In each of the following cases compare the bonds identified in red, and determine which bond you…

A: -> Strength of bond is proportional to bond dissociation energy . ->Bond length is inversely…

Q: write true if the statement if correct and change the bold word/phrase to make it correct addition…

A: The stored form of carbohydrate is called glycogen.

Q: A chemical engineer is studying the two reactions shown in the table below. In each case, he fills a…

A: The spontaneity of a reaction can be determined by the change in Gibbs free energy. The Gibbs free…

Q: A pharmaceutical company is preparing a supplement that provides several useful ions by the human…

A: A question based on general chemistry that is to be accomplished.

Q: Caffeine (CH₁N4O₂) is a weak base that is related to ammonia. For the purposes of this question, we…

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Q: Which of these labels correctly describes the relationships between groups A and B in this chair…

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Q: Which organic compound is the principal constituent of natural gas fuel? It is also a known…

A: Natural gas consist of hydrocarbon containing saturated paraffin such as methane, ethane, propane…

Q: 7- Balance the following reaction using half reaction method: 2- 2- a) S₂0₂ +OC₁ C₁¯ +S₂06 b)…

A: Here we are required to balance the redox reaction

Q: Which of the following illustrates an equatorial OH? нот OH "OH B. A. C. D.

A: The answer is given below

Q: (a) The discharge reaction for a zinc-manganese dioxide battery can be represented as: Zn(s) + 2MnO₂…

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Q: A student uses a pH meter in the lab to test a solution and determines that the resulting pH is…

A: pH of a solution is defined as negative logarithm of hydronium ion concentration.    pH = -log[H3O+]…

Q: Criven a Sbuchare is below antiotic flucloxa allin व Gaver (nue 454, Solubility at 25°C = 4• 4 x…

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Q: In his experiment, Jireh wanted to determine the molar mass of his unknown sample. Based on his…

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Q: Solve without using Excel program

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Q: Fusion reactions can only occur at high temperatures (thermonuclear reactions). Explain this…

A: The energy liberated is carried primarily by gamma positrons, and neutrinos, as can be seen from the…

Q: How many grams of solid sodium cyanide should be added to 1.00 L of 0.116 M hydrocyanic acid…

A: Given-> Volume of HCN = 1.00 L Molarity of HCN = 0.116 M pH = 9.990  Ka(HCN) = 4.00 × 10-10

Q: Outline methods for the preparation of acetophenone (phenyl methyl ketone) starting from the…

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Q: a) Draw the structures of the following organic compounds. i) cis-pent-2-ene ii) o-difluorobenzene…

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Q: Calculate the difference, ΔH-ΔE=Δ(PV) for the combustion reaction of 1 mole of methane.

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Q: 2. Prove that the reaction in the voltaic cell is spontaneous by calculating E° cell using Eqn 11b-1…

A: To find the Ecell∘ and to predict the spontaneity of the given electrochemical cell.

Q: A standardization with 0.1 % ascorbic acid consumed 21.20ml of DCPIP. When the same DCPIP was used…

A: In the given problem we need to calculate the % loss of vitamin C in the making of commercial fruit…

Q: Ex 14. Will magnesium shavings dissolve if added to an aqueous solution of ferrous sulphate? Justify…

A: The potential difference at the interface of electrode and electrolyte is called electrode…

Q: 6 Which of the following compounds has both optical and E-Z isomers? A CH₂CH=CHCH₂CH3 B…

A: We have to tell among the given which one has both the optical and E-Z isomers. The given compounds…

Q: Which of these labels correctly describes the relationships between groups A and B in this chair…

A: Here we are required to find the relationship between A and B