he ammonia – ammonium chloride buffer keep the pH: а. above 14; below 7; с. above 7 O d. =7

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Q: The figure below is a mass spectrum in ESI- MS. Calculate the MW of the protein analyzed from the…

A: The figure is given as the mass spectrum in ESI-MS. The MW of the protein has to be calculted.

Q: 26 What is the molarity of each solution? (a) 47 g of KCl dissolved in enough water to give 375 mL…

A: Molarity of a solution = Number of moles of solute/ Volume of solution in L

Q: 2. Bromine has two naturally occurring isotopes (Br-79 and Br-81) If the natural abundance of Br-79…

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Q: 7. Use the following data to determine the rate law for the reaction 2NO+H,N,0 + H,O. Exp No. [NO]…

A: For the reaction,    aA  +  bB  ----->  Products    Rate = k [ A ]x [ B ]y   where k is the rate…

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A: Here the ligands is same. So there is not possible any geometrical isomer

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Q: 28 The following reaction is endothermic: 30,g)=20,(g) If the reaction is at equilibrium, tell…

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Q: Consider the dipeptide (Pep) of a histidine and a lysine residue, with the neutral form pictured.…

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Q: QUESTION 10 How many partners does each molecule of water have in ice O A. 1 В. 2 OC.3 O D.3.4 O E.…

A: In this question, we have to answer how many partners does each molecule of water have in ice.

Q: Show COMPLETE solutions. Round-off FINAL answer to the 4th decimal The absorption coefficient of…

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Q: 3. Find the molar fraction of HCI in vapors over solution of 1.86 g of HCI in 100 g of benzene.…

A: given mass of HCl in solution = 1.86 g Molar mass of HCl = 1.01 + 35.45 = 36.46 g mol-1  Given mass…

Q: e. Primary amine 2: A compound C5 H1 00 gave the following spectral da 1H NMR spectrum doublet,…

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Q: B. Calculate the molality of a water solution if the freezing point is: 6. -9.3°C 7. -27.9°C

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Q: 17- The percentage of profein in meat products is determined by multiplying the %N as determined by…

A: Given, weight of meat scrap = 2.000 g Vol of H2SO4=50.0 mL Vol. of NaOH = 28.80 mL

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A: The orbital ,which n+l value is low this energy is also low

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Q: hydroboration with sia2BH would be achieved with the following reagent.

A: Sia2BH, which is a dialkylborane, also known as disiamylborane is bis(1,2-dimethypropyl)borane. This…

Q: 17. Which reagent(s) complete this transformation? * OH O 1) NABH4, 2) H30+ 1) 03, 2) H202, NaOH…

A:

Q: Which Newman projection is the most stable conformer for (S)-4-chlorobutan-2-ol?

A: In this question, we will draw the t stable conformer for the given compound.  First we will draw…

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Q: Nitric acid, HNO3, is used to produce many products, such as fertilizers and explosives. It also…

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Q: Identify which category the molecule below belongs to: O: H2N-C- -C-OH ČH2OH carbohydrate O lipid…

A: Answer Neither carbohydrates nor lipid

Q: 1. LIAIH4 a. 2. H;O* b. H2NNH2 КОН c. (CH;CH2)½CULI Cl d. (CH3)NH2 KMNO4, H;O*

A: In this question we have to tell the product of the reaction.

Q: e Calculate the pH of a 0.24M sodium formate solution (HCOONA).

A: Given : concentration of HCOONa solution = 0.24 M  To calculate : pH of solution

Q: How many carboyxlic acid groups will be attached to the benzene ring after the reaction? KMNO4

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Q: The correct MO's generated from side to side overlap of three p orbitals are a good representation…

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Q: 2HCI + Mg → MgCl2 + H2 What is the heat of the reaction? 9soln = +9240 J 9rxn = 9soln 9rxn = [ ? ] J…

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Q: HBr SA) Brz OH 1.) вн, / THF 2.) H2O,, HO H,SO, H,0

A: Mechanism for all the reactions has been provided in next step.

Q: The best way to decrease reaction rate is to do which of the following? A use a catalyst; increase…

A: Given,  Options are :

Q: Br CH3 HC=C_H,C NH; líq. NaNH2 B A NH3, líq. Br 1. О `OH 2. Н,О, H* 2. КОН D +

A: Detail mechanistic pathway is given below

Q: Question 10 Which scenario describes the most effective method of managing electronic waste to pro-…

A: e-waste management is a major task and challenge for the entire world.

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Q: When 25.0 g of zine absorbs 140 J of heat energy, what is the change in temperature of the metal?…

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A: Entropy of the system of given three reactions are -

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Q: 7. Use the following data to determine the rate law for the reaction 2NO+H,N,0 + H,O. Exp No. (NO]…

A: By comparing experiment 1 and 2 ,we see at constant [NO] and by changing the concentration of Cl2 no…

Q: Given the cell: Zn | Zn2* (0.100 M) || Co2+ (0.050 M) | Co Answer the ff: 1. The standard cell…

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Q: A calorimeter holds 50 g water at 22.0°C. A sample of hot iron is added to the water. The final…

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Q: The nucleus of 39K atom contains these many down quarks: O 39 O 58 O 59 O None of the above

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Q: A certain reaction has an activation energy of 49.24 kJ/mol. At what Kelvin temperature will the…

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Q: If a 3.20 M solution of sodium chloride contains 0.0850 mols of NaCl(ag), what is it's volume in mL?…

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Q: For which of the water solutions the boilling point is the highest? а. c(NaCI) = 0.85 mol/L b.…

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Q: Electron configuration corresponds to the atom of Zn is: a. 1s2 2s2 2p6 3s2 3p6 4s2 3d10 b. 1s2 2s2…

A: Atomic number of zinc is 30.  Zinc belong to d block elements

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A: One mole of any substance is the amount of the substance which contains the Avogadro number (NA=…

Q: 7.15 Ref. E

A:

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.