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Q: In an E2 reaction, what are the characteristics of a good base?  How does a chemist tell a strong…

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Q: 1. How many grams of Ca(OH)2 are needed to neutralize 25.0mL of .100M HN03? The reaction proceeds as…

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Q: 1.) A closed container contains equal molar amounts of 02 and CO2 gas and the total pressure is 500…

A: Given :  Total pressure = 500 mmHg  No.of moles of O2 = no.of moles of CO2  To calculate :  Partial…

Q: (d) What do you mean by combination band and Fermi resonance?

A: We have to tell the meaning of the combination band and the Fermi resonance.

Q: Provide the structure of the product(s) with stereochemisty if appropriate. If multiple products…

A: All the three reaction contains base and base abstracts the acidic proton and the carbanion attacks…

Q: 7. For the reaction CO (g) + Cl2 (g) = COC12 (g) has a A;Hº = +173.39. Which of the following can…

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Q: 11. (a) Compound A with molecular formula C1,H17NO has the following 'H NMR spectra. Identify the…

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Q: Compare and explain any trends for the change in temperature on evaporation for these liquids.…

A: The evaporation depends on the intermolecular forces (IMF) present among the molecules. The stronger…

Q: 1. Use the following equations C3H8(8) + 502(g)• 3CO2(8) + 4H2O(1) A H = -2219.9 kJ CO(e) + 1/202(e)…

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Q: Table 1. Smoke point and other physicochemical properties of commercial cooking oil samples. Cooking…

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Q: (b) Substitution of an amino group at the para-position of -1 acetophenone shifts the C=O frequency…

A: 1685 cm-1 is carbonyl stretch of acetophenone. NH2 group is electron donating group. It will donate…

Q: freezing point of 10g of CeH12O6 s of an unknown nonvolatile solute zene by 0.500°C.

A: 2) mass of solvent = 150 g = 0.150 kg □Tb = 0.50 °c Kb(benzene) = 2.53 °c/m Molality (m) = = moles…

Q: (a) A student is required to construct a battery in the form of a galvanic cell using nickel (II)…

A: The reduction potential of Nickel(-0.40v) is less than that of cadmium(-0.26v) , hence  Nickel will…

Q: Carbonyl-containing compounds are equally important in biological molecules. The following line…

A: As per Bartleby answering guidelines we have to solve only the first questions of multiple…

Q: Exactly 0.642 grams of pure Na2CO; was dissolved in 100.00 mL of 0.0746 M HCI. What mass (in grams)…

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Q: In an SN1 reaction, Nucleophile- What are the characteristics of a good nucleophile for SN1?   How…

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Q: Problem 2. Draw the resonance structures by hybrid orbitals. NH2 H,N-

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Q: 1) The partial pressure of a gas is 0.30 atm over a solution of the gas in water, having a mole…

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Q: Bond Molecule Lewis Structure Angle Polarity Hybridization NH, CH, C,H, H-C-H H-CC

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: For 02 at 298K what is the order of contributions to the total mean energy? А. > В. > (E > (E 3. С.…

A: For O2 molecules,  Total degree of freedom = 3N N is the number of atoms Total degree of freedom =…

Q: 3. Balance the reaction and then answer the following question: NaOH + H2S04 → H20 + Na2S04 a. How…

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Q: Give two examples of the Personal Error (one of the classification of systematic error). Please do…

A: Personal errors are types of operational errors that arise due to personal limitations of the person…

Q: Cocaine can hydrolyze in solution when exposed to strong acids or bases, but the process typically…

A: Equations for reactions for the hydrolysis of cocaine under both acidic and basic conditions with…

Q: An object has a density of 0.25 g/mL and a mass of 0.75 kg, find the volume(in ml) of this object.

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Q: 4. A chef wants to make a solution (made with sugar (C,,H2,01) and H,O) with a molarity of 3.64M. Ho…

A: Given: Molarity of solution = 3.64 M Volume of solution = 1.16 L

Q: Consider these reactions: Reaction 1: H2 (g) + Cl2 (g) → 2HCI(g) AH = -184.6 kJ %3D Reaction 2: 20F2…

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Q: 4. Propose a sequence of reactions that efficiently converts the given starting material(s) to the…

A: Note : Aldol condensation between benzaldehyde and nitro methane. Cyclobutadiene is converted into…

Q: Which of the following compounds is optically active? Select one: a. CI- CI Ob. CI CI o d. All of…

A: if the molecule cut into two halfs nothing but plane of symmetry then that molecule is achiral…

Q: major elimination product expected from the following reaction?

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Q: Draw the resonance structures by hybrid orbitals. NH2 NH2

A: Resonance structures :  Resonance structures can be defined as the delocalization of electrons in a…

Q: Compare between Electron ionization (EI) and Chemical ionization methods.

A: Solution: Both of these method are ionisation method where the sample (solid,liquid, gas) interact…

Q: Cobalt(II) ions (Co2*(aq)) react with 6 equivalents of a ligand (L) to from the complex cation…

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Q: Describe with illustrations the observed peak for a chromatogram with the following tailing factors…

A: Tailing factor: It should meet the requirements of the individual monograph and can be calculated by…

Q: Which of the properties below apply to the polymer that forms when the following monomers react?…

A: The given reaction shows the reaction between an amine monomer and a carboxylic acid monomer. It…

Q: For a certain reaction, the standard free energy change is -80.0 kJ at 300 K and - 40.0 kJ at 600 K.…

A: Given: ΔG at 300 K = -80.0 KJ And ΔG at 600 K = -40.0 KJ.

Q: What are metastable peaks? Mass spectrum of toluene exhibits two strong peaks at m/e =91 and m/e=65.…

A: Mass spectra is used to determine the molecular formula and molecular structure of compound. It is…

Q: Give two examples of random errors. Please do not give what is already given in the example. Thank…

A: A question based on tools in analytical chemistry that is to be accomplished.

Q: A chemist measures the energy change AH during the following reaction: 2 NO,(9) → N,O4(9) AH=-55.3…

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Q: 11. (a) Compound A with molecular formula C10H17NO has the following 'H NMR spectra. Identify the…

A: When two benzene rings are connected to each other through a sigma bond, the compound is known as…

Q: ne pressure of N2(g)?

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

Q: Which of the following mixtures will NOT be effectively separated using simple distillation? Boiling…

A: Given,

Q: ne percent yield

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Q: :) Assign numbers (1, 2....) for each 1°C nucleus and comment on the types of peaks expected for the…

A: Normal 13C : Assign a,b... two non equivalent carbons. Then calculate the no of signals. DEPT 45 :…

Q: Calculate the molality of a solution that contains 56.5 g of benzoic acid, C6H5COOH, in 350 mL of…

A: Mass of benzoic acid = 56.5 g  Volume of ethanol = 350 ml  Density of ethanol = 0.789 g/ml  Molality…

Q: 11. Using a Fisher projection, draw the 2R,3R,4S stereoisomer of the following compound. F. Br 2. HO…

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

Q: y Joules were added?

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

Q: Compare between Electron ionization (EI) and Chemical ionization methods.

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Q: Which enantiomer of proline would favor the S enantiomer of product? Which one would favor the R…

A: proline is an organic compound which have a five membered ring, with a COOH group attached to it.…

Q: Arrange the following compounds in order of increasing melting point. HO. Blank 1< Blank 2 < Blank 3…

A: The Temperature at which the substance changes its state from solid to liquid is known as Melting…

UV Visible Spectroscopy

Spectroscopy refers to the absorption or emission of light or other radiations by matter. When a substance or chemical absorbs light or radiation, they reach an excited state followed by de-excitation or emission of the light or radiation forming distinct spectra. UV-visible spectroscopy or  ultraviolet-visible refers to the absorption and emission in the ultraviolet and visible regions of the electromagnetic spectrum.