Can you check  if this right? Can you provide on how to find the best structure when it come to NMR

Q: . what is the volume of the ammonia, in mL needed to prepare the buffer solution? 2. whaw is the…

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Q: Using the thermodynamic information in the ALEKS Data tab, calculate the standard reaction entropy…

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Q: Calculate the molar concentration of water in 894 mL H2O. Assume that the density of water is 1.00…

A: •Given volume of water is 894 ml. •Density of water=1.00 gm/ml. •Density=Weight/Volume  •So Weight…

Q: the product of thr reaction should be the letter but idk what to do?!! help me please

A: Friedel-Crafts Alkylation refers to the replacement of an aromatic proton with an alkyl group.…

Q: For each chemical reaction listed in the first column of the table below, predict the sign (positive…

A: Increasing in entropy order, Gas>liquid>solid

Q: Silver nitrate reacts with Al to form aluminum nitrate and silver. The balanced chemical reaction…

A: A limiting reactant is the one which is completely used up in the reaction and which determines the…

Q: A galvanic cell is powered by the following redox reaction: + HNO₂(aq) + H+ (aq) + Cut (aq) Answer…

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Q: Calculate △Go for the following reaction  N2O3(g) --> NO(g) + NO2(g)

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

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Q: Which of the following alternatives does not apply when deriving the Michaelis-Menten equation?…

A: Michaelis-Menten equation is very useful for driving the rate expression in case of enzymes.

Q: Question 12 The three main ingredients of crystal meth include all BUT WHICH of the following? O…

A: Drug is a substance that is used to prevent diagnose and treats the symptoms of disease. Drug can…

Q: Question 11 For the following sequence, fill in any missing reagents/products. تين الي PhyP KOIBu HO…

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Q: لملسم The monomers H₂N- -NH2 and HD- would react with each other to form O a polyester O a…

A: Polyester: It is a category of polymers that contain ester functional group in every repeating unit…

Q: (b). Compound A a key unit of a prescribed drug for treating sleeplessness (insomnia). -N1 N²…

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Q: C 다 12/pd-C DỊCH, L 2) H3O+ ?

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Q: A chemist prepares a solution of iron (III) chloride (FeCl₂) by measuring out 46.3 mg of FeCl, into…

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Q: Calculate AG for the following reaction at 25 °C: rxn 4CO₂(g) + 2H₂O(1) → 2C₂H₂(g) + 5O₂ (g)

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Q: A living cell has a normal volume when placed in a solution having a concentration of 0.3 M. If the…

A: On basis of osmosis process we can predict what will happen to the cell.

Q: Spectrum A ¹H triphenylmethanol @ 500 MHz solvent: CD 8.5 8,0 7.5 7.0 a. HA b. HB c. Hc d. Ho e. HE…

A: To predict the splitting pattern of each hydrogen of the given triphenylmethanol structure.

Q: Determine AH° for: 4 NH3(g) + 7 0₂(g) → 4NO2(g) + 6 H₂O(l)

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Q: 1. Statement 1: The oxidation number of hydrogen is -1 when bonded to non metals and +1 when bonded…

A: There are three questions from different concepts. Whether the statements are true or false are…

Q: Sorbitol is a sweet substance found in fruits and berries and sometimes used as a sugar substitute.…

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Q: N

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Q: What is the lattice constant ? if the lattice has 400 lines per mm?

A: Given, Number of lines (N) per mm = 400 lines/mm = 400,000 lines/m, Then grating space (d), d…

Q: A buffer solution is 0.396 M in HF and 0.233 M in KF. If Ka for HF is 7.2x10-4, what is the pH of…

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Q: Problem 2: pka = 3.69 Your facilitator asked you to prepare 450-mL of a buffer solution having a pH…

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Q: (a) Briefly explain why alkyl halides cannot replace bromobenzene in the Heck reaction. (b) Predict…

A: a  The oxtdalive addition reactions of halides other than vinyl  or aryl usually are very sluggish.…

Q: Nickel and carbon monoxide react to form nickel carbonyl, like this: Ni(s) +4 CO(g) → Ni(CO)4(9) At…

A: We need to find equilibrium constant for the given reaction.

Q: 9. A total of 49 g of a compound with the molecular formula (H2CO)x is dissolved in 500 g of water…

A: Freezing point depression : The lowering of the freezing point of solvent upon the addition of…

Q: Consider the following data on some weak acids and weak bases: name hypochlorous acid hydrofluoric…

A: Given,  Ka of HClO = 3.0 x 10-8  Ka of HF = 6.8 x 10-4  Kb of CH3NH2 = 4.4 x 10-4  Kb of C2H5NH2 =…

Q: Nitric acid is a key industrial chemical, largely used to make fertilizers and explosives. The first…

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Q: Are the following stabilised by resonance? A) C2H4 B) CHFO

A: Resonance structure are combination of Lewis structures that describe the delocalisation of…

Q: How do I know the order of stability?

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Q: Curved arrows are used to illustrate the flow of electrons. Follow the curved arrows and draw the…

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Q: a) Briefly, but informatively, discuss why some countries in the world are thinking and/or moving…

A: As per the bartleby expert guidelines, I am allowed to answer one question at a time.  Please repost…

Q: a. ОН ОН ОН ОН

A: As per the bartleby expert guidelines, I am allowed to answer one question at a time. Please repost…

Q: 2. A 20.00 mL solution of 0.1000M monofunctional weak base, hydroxylamine (HONH₂), (Kb = 9.1 x…

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Q: 2. (a). Compound B is an effective medication used to treat major depression by inhibiting the…

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Q: (c) O 1) LIAIH4, Et₂O 2) H₂O+ 3) NaOH 4) CH, Br

A: 4. (a) Ans :The epoxide ring in presence of Grignard Reagent will undergo SN2 reaction with attack…

Q: 21.6 g of an acidic solution was mixed with 60.4 g of water in a calorimeter with a calorimeter…

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Q: The reaction coordinate diagram above has an activated complex (AC) with a potential energy (PE) of…

A: Given: potential energy of activated complex without any catalyst = 705 KJ. And the potential energy…

Q: 3. In the following synthetic sequence, identify the compounds A, B, and C H₂C-N- -OCH3 H3O* A Ph Ph…

A: Here we have to predict the products formed in the following sequence of reactions. In the first…

Q: A 1.5L nitric acid solution was prepared by mixing 5mL of concentrated nitric acid (SG = 1.42) with…

A: Volume of final solution = 1.5 L  Volume of nitric acid taken = 5 mL

Q: (d) (i) Draw the partial orbital diagram and Lewis symbol to depict the formation of Na* and 0²-…

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Q: 7. A sample of helium gas at 22.°C and 1.00 atm occupies a volume of 2.54 L. What volume will it…

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Q: 1. Statement 1: beside its value for jewelries currency and electronics gold is also important in…

A: Gold is a coinage metal and also have uses in health professions. Gold is used to prevent joint…

Q: Use the choices below to answer the questions that follow. WRITE THE CAPITAL LETTER ONLY H₂CH₂C…

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Q: A galvanic cell is powered by the following redox reaction: + HNO₂(aq) + H+ (aq) + Cut (aq) NO(g) +…

A: Galvanic Cell reaction is ., HNO2(aq) + H+(aq) + Cu+(aq) ---> NO(g) + H2O(l) + Cu2+ The emf of a…

Q: 1a) Provide starting materials needed to synthesize these compounds. NaOH, H₂O Cat.HCI, Ph O Ph 2. N…

A: Note - Since the given question is a multiple question, hence I solved first question according to…

Q: What are the standard heats and free energies of formation and absolute entropies of water? Looking…

A: The temperature and pressure at standard conditions are 273.15 K and 1 atm . The relation between…

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.