Discussion 1- If you were given a known substance for the melting point determination how could you prove it to be the specific compound and not another compound with the same melting point ?

Q: 5. Which of the following molecules would you anticipate having the potential curve shown below? (a)…

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Q: Exercise 15: X-ray diffraction by a row of identical atoms Consider the linear chain of carbon atoms…

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Q: 4. он

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Q: imbo dim 5. 1. 6. 2. 3. 7. HO, HO, Answer the question below about the fatty acids shown.

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Q: 2 is corrosive, so purging with N2. which is inert, helps to reduce reactivity within the…

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Q: You are given a 1:1 (by weight) solid mixture of vitamin C and vitamin A, and you are going to use…

A: A 1:1 solid mixture of vitamin C and Vitamin A is to be separated from one another by liquid-liquid…

Q: 2. Determination of the molecular weight of proteins. A student performs a protein separation in the…

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Q: Temperature "C Temperature "c

A: Fractional distillation is a distillation technique which is used for the separation of miscible…

Q: A student synthesized a new compound with molecular formula C6H3Br2NO₂ which displayed two singlets…

A: Solution 1:The molecular formula of compound 1HNMR spectrum has two peaks with intensity ratio 2 and…

Q: Question 11 The TLC plates used in the lab are coated in silica gel. Which best describes the silica…

A: Thin layer chromatography is a chromatography technique that separates non-volatile mixture. In TLC,…

Q: city factor that can be separated with a given efficiency by a particular prom c)-Efficiency d-Load…

A: 24. b.3M  25.a. Reverse osmosis 26. C.Silica gel & alumina 27.b.Aromatic compounds  28.a. Flame…

Q: 4. What do you mean by eutectic point? Discuss eutectic point with help of suitable diagram? Discuss…

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Q: 3. What do you notice about the compounds under the melting point çolumn that have negative values?

A: Ionic bond is more strong. So, more heat required to boil or melt. Where as covalent bond are not…

Q: A type of liquid crystal that has an arrangement :spatially Cholesteric Nematic OSmectic Columnar…

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Q: In which option is the order showing whether the questions given below are true or false? () If the…

A: The statement first is incorrect because complete purification through distillation is not possible…

Q: Draw (illustrate) a hypothetical phase diagram incorporating the following salient features: a.…

A: The diagrammatic representation that provides information about the physical parameters such as…

Q: QUESTION 1 If you are using polystyrene as the stationary phase, what would be the effect of…

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: SCI2 8. What do you notice about the compounds under Cl2 -1 the melting point column that have…

A: MELTING POINT :  This is the temperature at which a solid become a liquid. When we increase the…

Q: You have an unknown with an observed melting point of 123-126"C. Which of the following standards…

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Q: 4) ½N2(g) + 02(g)= NO2(g) Kc 1.04 x I N2(g) + 202(g) = N204(g) Kc =7.42 x 1 %3D Calculate Kc for…

A: Calculate Kc...

Q: 1. Look at the spectrum shown and answer the following questions: 1.4 1.2 - 0.4 0.2 24n 280 320…

A: electronic transition from lower energy level to higher energy level leads to formation of energy…

Q: Suppose you want to determine the eutectic melting point of a eutectic mixture of adipic acid…

A: Literature melting point of Adipic acid = 153˚C Literature melting point of Salicylic acid = 158˚C

Q: The best way to separate a mixture of methylamine, dimethylamine, and trimethylamine is to O steam…

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

Q: What is done if the solid contains a colored impurity?  Know the proper funnels and equipment to…

A: The procedure is about purification through recrystallization process.

Q: I. Rank in order of increasing stability using the less than (<) inequality symbol. Label the…

A: re compound containing (4n+2) pi electrons in outer periferial, is aromatic whereas 4n pi electrons…

Q: Separate a mixture of Vitamin D and Vitamin B2 (riboflavin) by paper chromatography. The stationary…

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Q: An organic compound has a percent composition, 89.84 %C, 10.17 %H. This compound has an approximate…

A: Percentage composition of hydrogen = 10.17 %  Percentage composition of carbon     = 89.84 %  The…

Q: Which of the following statements is/are correct about visible spectrum i. white light passes…

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Q: Eren, Rochelle, and Sarah were assigned to do a recrystallization experiment using three different…

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Q: 3. Draw (illustrate) a hypothetical phase diagram incorporating the following salient features: A.…

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Q: Exercise 3 1. How can you tell that a compound has decomposed on melting? 2. How do impurities…

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Q: Order the compounds made of the following molecules by increasing melting point. HO Ho i HO HO HO-…

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Q: 4. A student has an unknown with an observed melting point of 82.5 °C - 86 °C. Is it Compound X with…

A: Given information: Observed meting point = 82.5∘C-86∘C Melting point of compound X =84.5∘C-85∘C…

Q: 3. A student separated an unknown mixture of ions using the procedure of Part A. When the spots were…

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Q: 1. Boiling point of n-butyl alcohol 2. Boiling point of n-butyl acetate 3. Refractive index of…

A: Boiling point of a substance is defined as the temperature at which it's vapour pressure becomes…

Q: Of the following substances, has the lowest boiling point. Select one: O CHCH,OH (M. Wt. = 46) %3D o…

A: Boiling point:The temperature at which the vapor pressure of the liquid becomes equal to the…

Q: How to know if substances (cinnamic acid and urea) are pure based on their melting range?

A: The melting point of a pure substance is always higher and has a smaller range than the melting…

Q: Temp (°C) 110 100 90 80 70 60 50 40 Distillation Curve 0 20 40 60 80 100 120 Volume (drops) Based…

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Q: 1. A vial containing an unknown sample is suspected to be one of the following compounds (mp.): urea…

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Q: Is a mobile phase composition 40:60 of acetone:hexane more polar than a mobile phase composition of…

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Q: In polarimetry, indicate the correct explanation of the drawing. (1). No light reaches the eye,…

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Q: Determine the identity of an unknown white powder based on the following information: Flame Test:…

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Q: What method of separation would you use to isolate compound B from an ether solution containing a…

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Q: Constant-boiling mixtures that cannot be further purified by distillation, caused by intermolecular…

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Q: At pH 7.4 what type of interaction occurs between... guanidine and aromatic hydrocarbon tetrazole…

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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.