Show the oxidation and reduction reactions that happens at the electrodes of the improvised cell (the photo).

Q: How many liters of 0.88 m solution can be made with 25.5 grams of lithium fluoride

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Q: Give the mechanism Br₂ hv NBS A q

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Q: How many KJ of energy are released when 6.39 g of Fe reacts with excess O₂? Given the following…

A: Given :  Mass of Fe = 6.39 gm  4Fe + 3O2 -----> 2Fe2O3.      ∆H = -1625 KJ

Q: 3. Given: Soda and lime are added to a glass batch in the form of soda ash (Na₂CO,) and limestone…

A: We have to calculate the weight of soda ash and Limestone that must be added to 110 lbm of SiO2 to…

Q: using the classicial definition of kinetic energy K=1/2mv^2 and the quantum mechanical definition of…

A: Given that, The kinetic energy is K =12mv2. The linear momentum operator is px=-ihddx. We have to…

Q: Assign the IUPAC names of the following structures 요 H Lin i Br

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Q: Give the reaction mechanism (showing curly arrows) for the bromination of methane in the presence of…

A: Here we are required to show the mechanism of the reaction

Q: Ca²+ (aq) + 2e → Ca(s) OA.0.21 V OB. -0.47 V OC -0.21 V OD.0.47 V OE. 0.42 V A Moving to another…

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Q: What is the purpose of NaCl in the experiment? Will the same result be obtained if thereacting…

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Q: Sodium-24 (24Na) is a radioisotope used to study circulatory dysfunction. A measurement found 5…

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Q: Which of the following exists in mainly the enol tautomeric form? H3C H H3C CH 3 I H3C "I CH3 EtO…

A: Generally carbonyl compunds exits in keto form because keto form is more stable than enol form. But…

Q: 31. What volume of H2 would be produced from the reaction of 225 grams of Zinc under conditions of…

A: Zinc metal reacts with hydrochloric acid to form zinc chloride and hydrogen gas. The equation for…

Q: How many electrons would the most stable cation of Ca have

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Q: A uestion 7 For the first blank select an answer with a (1) in front. For the second blank, select…

A: The answer is attached below-

Q: A coffee-cup calorimeter contains 60 mL of water with an initial temperature of 24.9°C. An unknown…

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Q: Consider the galvanic cell based on the following half-reactions: Mn²+ +2e →Mn = -1.18 V Fe²+ + 2e →…

A: Here we are required to find the standard potential of the cell reaction along with the equilibrium…

Q: The following reaction is in equilibrium in lake water: HCO3(aq) + H+ (aq) = H₂CO3(aq) Predict the…

A: According to Lechatlier's principle, the equilibrium is subjected to stress,  shifts in such a…

Q: Fe3+ (aq) + 3e– → Fe(s)          +0.771 V Al3+(aq) + 3e– → Al(s)              –1.660 V 1. Calculate…

A: Using the standard reduction potential to find the E°cell. Then using nernst equation to find Ecell.…

Q: Which action will increase the entropy of 1 mole of atomic oxygen? A. Increasing the volume of the…

A: The variation of one of the important thermodynamic variable such as entropy w. r. t.  change in…

Q: Calculate the entropy of HBr at 298 K and 1.00 bar, given that the bond length is 1.41 Å and the…

A: Srot=R ln 8π2IkBTσh2+R                                (1)

Q: Fill in the molecular orbitals for the H2 molecule. How do you describe the highest occupied…

A: Fill in the molecular orbitals for the H2 molecule. How do you describe the highest occupied…

Q: Q. 1. In the laboratory of chemistry, nickel was estimated gravimetrically by a student. He…

A: Answer: This question is based on qualitative analysis of Ni2+ ion of 4th group where dimethyl…

Q: 5. (CH 15) Define bioaccumulation and give an example (who suffers most). Rank the following 4…

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Q: A flask contains 600 mL of chlorine gas at 560mm Hg. If the volume of chlorine gas inside the flask…

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Q: What other factors do you need to consider when assessing feasibility of titration?

A: The factors are :-  i) Titration reactions mixture must be rapid. ii) Reaction mixture must be…

Q: A secondary cell (battery) can operate either as a galvanic or an electrolytic cell. True or False…

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Q: A 0.300-g feed sample is analyzed for its protein content by the modified Kjeldahl method. If 25.0…

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Q: What is the pH and pOH concentration of a 0.072 M of methylamine? Write the ionization equation and…

A: Given, Concentration of the methylamine = 0.072 M  Kb for methylamine = 4.6x10-4 pH of the solution…

Q: 9. Propose a mechanism (curved arrows) for the following reaction, and use that mechanism to predict…

A: Here we have to write the mechanism of the following reaction.

Q: What would happen to CaBr2 + Ni(NO3)3 --> NiBr3 + Ca(NO3)2 , if another CaBr2 was added?

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Q: Chemistry 1a. Draw the structure of dehydroascorbic acid. 1b. Draw the structure for ascorbic acid.…

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Q: llus_engine.html?ClassID=1834324617# 9H₂0 +9cal = 2020 J qunknown = -2020 J The thermal energy comes…

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Q: Consider the following reaction: 2Sb2S3 (s) + 6PbO2 (s) → 2Sb2O3 (s) + 6PbS (s) + 30: (g) a)…

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Q: Briefly discuss titration errors from the use of acid/base indicators

A: There are two types of errors that occurs from the use of acid / base indicators. Determinate error…

Q: Consider the following reaction at 298K. 2Fe³+ (aq) + Fe(s) 2Fe2+ (aq) + Fe²+ (aq) The standard…

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Q: Calculate the potential developed by a voltaic cell using the following reaction if all dissolved…

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Q: Calculate the % relative error in hydronium ion concentration by using concentrations instead of…

A: Given Ka, Acetic Acid → 1.75×10-5 Ammonium ions → 5.70×10-10 Chloroacetic Acid → 1.36×10-3…

Q: a which of the following nuclei decay by 8 decay? (Select all that apply.) 60 BN PF b which of the…

A: Beta decay occurs in those nuclei in which either the number of protons or the number of neutrons is…

Q: Since each molecule of acetic acid which ionizes produces 1 H+ ic concentration in the solution are:…

A: Weak acid ionized partially.  Degree of ionization (a) = 1.34 % = 0.0134  initial concentration of…

Q: A group of students conducted a similar experiment to Part 3 (note the differences in concentration…

A: As per Nernst equation, potential of a cell is given as: Ecell=Ecell0-0.0591nlog Q

Q: When an aqueous NaCl solution is electrolyzed, how many coulombs of electric charge need to be…

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Q: Calculate AG and K at 25°C for the reactions. a. 7H₂O + 2 Cr³+ + 3 Cl₂ ⇒ Cr₂O7²- + 6 Cl¯ + 14H+ εº…

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Q: c. Describe the coupling pattern (i.e. doublet, triplet, doublet of doublets, etc.) for the peak at…

A: Solutions- Coupling pattern is the doublet, triplet,   the 1H NMR spectrum was obtained on a 300 MHz…

Q: Based on the thermodynamic properties provided for water, determine the energy change when the…

A: Answer: In this cooling process water will lose its energy via 3 step process: 1. Vapor will be…

Q: Calculate AGº and the equilibrium constant for the following reaction at 298 K: Zn²+ (aq) + Ni(s) →…

A: The question asks to find standard Gibbs free energy and equalibrium constant.The two value can be…

Q: 6) C,H,X in this compound 100 80 MASS SPECTRUM 0.0 40 120 80 m/z NIST Chemistry WebBook…

A: Note : M:M+2 ratio is 1:1. Therefore the compound is having bromine atom. m/z = 43 belongs to propyl…

Q: A solution contains NaHCO3, Na2CO3, and NaOH, either alone or in permissible combination. Titration…

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Q: 애 Ph NADPH/H+ PCC

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Q: Chemistry Do you expect the acid/heat or enzymatic hydrolysis to be more effective? Explain your…

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Q: A buffer is prepared containing 0.250 M NH3 and 0.253 M NH4Cl. Calculate the pH of the buffer. The…

A: Use the formula of buffer solution to calculate pH for buffer solution and calculate Ka value using…