Why are indicators useful?

Q: Discuss and provide examples of the top, middle and base notes.

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Q: An electrochemical cell is created using the following: A useful table of reduction potentials Eº…

A: We have given two electrodes Ag(s) and Ni(s). The half cell which has the higher reduction potential…

Q: (1) Calculate AG for the following reactions at the stated temperatures: (a) ZnO(s) + C(s) Zn(s) +…

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Q: 1. It measures how good chiral molecules are able to rotate plane, polarized light. A. Specific…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Specific Chemical Shift Hd Hc Hb Ha multiplicity Integration Proton # of 13C-NMR (s, d, t, etc.)…

A: The given compound is 2-bromobutane, for which have to find the chemical shift, multiplicity and…

Q: Show how the Suzuki and'or Heck reactions can be used to prepare the following compounds: Part A…

A: Note : Suzuki reaction : Boronic acid + bromo benzene. Heck reaction : alkene + bromo benzene.

Q: OH the

A: Given reaction is :  Complete the reaction and give the major product = ?

Q: When the nuclide cesium-129 decays by electron capture: The name of the product nuclide is The…

A: Given,  When Cesium-129 nuclide on electron capture the formed nuclide is:

Q: In Part A, the mass of KHC,H,O, is measured to the nearest 0.0001 g. However, the volume of water…

A: The explanation for the following is:

Q: What is the half-life of iron-55 if 5.93 years are required for the activity of a sample of iron-55…

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Q: solve question 2,  Q2: What is the effect of the following conditions on the molar mass of unknown?…

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Q: Which of the following characterizes a gamma ray? Choose all that apply. O is not deflected by an…

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Q: Specific Chemical Shift multiplicity (s, d, t, etc.) Integration # of 13C-NMR Br Proton (ppm) (# of…

A: Chemical shift- It is the resonant frequency of a nucleus relative to a standard in a magnetic…

Q: 2N,O5 (g) --> 4NO2 (g) + O2 (g) The rate of disappearance of dinitrogen pentoxide is not the same as…

A: Given-> 2N2O5(g) ----> 4NO2(g) + O2(g)

Q: 6. What are the possible values of the angular momentum quantum number (€) when n= 3 ? 7. What are…

A: The electronic configuration of any element can be represented by 4 quantum numbers-  1- principal…

Q: What would be the electrochemical notation for the redox reaction below? Zn (s) + Cr3+ (aq) → Zn2+…

A: In an electrochemical cell, the electrical energy is produced from the spontaneous cell reaction at…

Q: A 100.0 ml solution containing 0.750 g of maleic acid (MW = 116.072 g/mol) is titrated with 0.239 M…

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Q: Uranium-235 is commonly used in nuclear power plants and has a half-life of about 704 million years…

A: Given -> Half life = 704 million years = 2.22 × 1016 seconds.

Q: Which of the following statement/s is/are correct? (A) The quantity AH is dependent on the pathway…

A: A) the quantity ∆H is dependent on the pathway to which this value is computed.

Q: Consider the concentration cell shown below: Voltmeter Copper Соpper Porous cup 0.1M Cu(NO3)2 Glass…

A: In a concentration cell, the electrode where the concentration of the solution is greater will act…

Q: QUESTION 11 How much energy, in J. is needed to melt 1.762 grams of silver at 65 87 C?

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Q: (Q28) A 25.00 mL solution of O.200 M hydroiodic acid (HI) is being titrated with 0.200 M sodium…

A: Answer: In the Acid-Base titration equivalence point is the one where all the acid has been…

Q: CrivensooL Solution that s o.Go m HF and जवाका!oo ा &utक्त उB T.oo M kt alcalare चe PH भयच०.०+onl…

A: Given,  Molarity of weak acid, HF = [HF] = 0.60 M  Molarity of salt, KF = [KF] = 1.00 M  Volume of…

Q: Air is composed of approximately 78% N2, 21% O2 and 1% percent other gases. Calculate the density of…

A: We would use ideal gas law to calculate density of Helium gas at STP .  To explain why balloon…

Q: Did I do this correctly?

A: A question based on measurement that is to be accomplished.

Q: 300 MHz 1H NMR spectra in CDCl3 are shown below for five of the six isomers of dimethylphenol. Match…

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Q: A piece of metal at 20°C that weighs 60.0 g is dropped into 200. g of water at 100°C. The specific…

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Q: What is the binding energy in kJ/mol La for lanthanum-139? |k]/mol 57;H+ 82;n The required masses…

A: 521H1 + 82 1n0 --->

Q: Give the products of each equation

A: 5. Osmium tetroxide reacts with an alkene to give 1,2-dihydroxy alkane. The reaction follows the…

Q: .CH 3 CM 3

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Q: Which of the following describes the reaction: 230 Th → He + ®Ra 88 90 Obombardment reaction beta…

A: Radioactive decay is the nuclear process in which an unstable atomic nucleus loses energy through…

Q: For items 13-15, refer to this problem: What is the heat of reaction of Carbon monoxide if the…

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Q: If the solubility of iron(II) hydroxide is 2.34 x 10-3 g in 5.05 liters at 18.0°C. What is the Ksp…

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Q: Organic Chemistry Organic Chemistry Problems Substitution Reactions S1 and S,2 Problem 13: For the…

A: Note : The compound is allyl bromide. Allyl bromide forms allyl cation and generates the product.…

Q: OH NaOH H3C CH3 H3C CH3 Alkyl halides undergo nucleophilic substitution and elimination reactions.…

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

Q: Calculate the concentration (molarity) of OH- in a solution that is 0.0713 M NaCIO at 25°C.

A: Given salt is NaClO  It is a salt of strong Base (NaOH) and weak acid (HClO)  In this the anion ClO-…

Q: Salt # Name Ksp A A93PO4 2x10-18 SFF2 |8х10-10 PbCl2 2x105 B C BaSO4 2x10-9 E CoS 5x10-22

A: Ksp is the constant of or ratio of the amount of solute to solvent for any compound. The larger the…

Q: Compounds X and Y are both C5H11CI products formed in the radical chlorination of pentane.…

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Q: Question 17 Which of the following vitamins acts as a transcription regulator? Biotin O B.…

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Q: The peak widths if the spectra of atomic UV-vis are different from the molecular UV-vis spectra.…

A: Atomic UV-vis spectra gives sharp peaks where as molecular UV-vis spectra gives broad peaks.

Q: Average Exposure to Radiation from Common Sources Source Dose (mrem/year) Naturally Occurring…

A: A question based on measurement that is to be accomplished.

Q: Calculate the pH of this buffer after the addition of 20.00 mL of 3.00 M sodium hydroxide, NaOH, a…

A: Using Henderson - Hasselbalch equation to calculate pH of a buffer    Adding strong base will reacts…

Q: the solubility rules, Ag2CrO4 was listed as an "insoluble" salt. It is actually slightly soluble in…

A: Given-> Concentration of CrO42- = 7.80 × 10-5

Q: Draw a plausible mechanism for the reaction. CH-OoC,,H35 CH-OH 3 NaOH 3 CH-OO C17H35 CH-OH Nao…

A: ->-OH is nucleophile hence, give nucleophilic addition elimination reaction.

Q: anode half-reaction: cathode half-reaction:

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Q: 1) Considering the equation below, with its rate law equation, what is the rate of the reaction when…

A: Given-> [AB] = 5.2 M [C2] = 6.7 M [D] = 3.3 M Rate constant (K) = 5.6 × 10-3 L2× mole-2× s-1 Rate…

Q: CHz KCN OMSO

A: ->DMSO is polar aprotic solvent hence , it give nucleophilic substitution reaction through SN2…

Q: Each of the IR spectra below corresponds to one of the aromatic compounds listed below.…

A: Ir spectrum provides information about the functional group present in given compound.

Q: Q2: A tablet that contained 500 mg of vitamin C was titrated with 20.15 ml of KIO to the blue starch…

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Q: ** vi CI 10 Desulfovibrio vulgaris 6. SR humic acid? hematite $ 6 7 pH 3 4 8 9 10 Fig. 7-12.…

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