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- In light of the nitrogen rule mentioned in Problem 12-17, what is the molecular formula of pyridine, M+=79?Azulene, an isomer of naphthalene, has a remarkably large dipole moment for a hydrocarbon (μ = 1.0 D). Explain, using resonance structures.Brainberene, a compound isolated from an organic chemist’s brain, has the molecular formula C16 H26. When Brainberene is subjected to catalytic hydrogenation using an excess of hydrogen, 1 mol of Brainberene absorbs 3 mol of hydrogen and produces B: C16 H32. 1) What is the element of unsatuation (IHD) of Brainberene? 2) How many double bonds and rings do Brainberene has? Laboratory experiments revealed that Brainberene has no triple bonds. 3) What is the IHD of B? d) How many double bonds and rings does B has? 12
- 1,4-Pentadiene (CH2=CH-CH2-CH=CH2) is a liquid at room temperature and has a density of 0.66 g/mL and molar mass of 68.12 g/mol. In a laboratory experiment, 3.80 mL of this compound was treated with 4.80 mL of conc. H2SO4 (100% w/w; molar mass 98.08 g/mol). Note that the density of conc. H2SO4 is 1.84 g/mL. The resulting sulfate ester was then treated with 1.20 mL of water (molar mass 18.02 g/mol) affording, after work- up, 2,4-pentanediol (molar mass 104.15 g/mol) as the crude product. The crude product was then purified by simple distillation, which yielded 2.00 g of pure product. What is the theoretical yield of 2,4-pentanediol expressed in grams? Show calculations. What is the percentage yield of pure 2,4-pentanediol?1,4-Pentadiene (CH2=CH-CH2-CH=CH2) is a liquid at room temperature and has a density of 0.66 g/mL and molar mass of 68.12 g/mol. In a laboratory experiment, 3.80 mL of this compound was treated with 4.80 mL of conc. H2SO4 (100% w/w; molar mass 98.08 g/mol). Note that the density of conc. H2SO4 is 1.84 g/mL. The resulting sulfate ester was then treated with 1.20 mL of water (molar mass 18.02 g/mol) affording, after work- up, 2,4-pentanediol (molar mass 104.15 g/mol) as the crude product. The crude product was then purified by simple distillation, which yielded 2.00 g of pure product. a. Provide a balanced chemical equation to show the reaction between 1,4-pentadiene and sulfuric acid. Do not use molecular formulas in the chemical equation except for sulfuric acid. b. What reactant is the limiting reagent in this chemical equation? Show calculations to support your answer.The German chemist Wilhelm Kӧrner (1839-1925) observed in 1974 that each of the three isomers of dibromobenzene, A, B, and C, gave a different number of tribromobenzenes upon further bromination, allowing him to assign their respective structures. Try to do the same and assign structures to A, B, and C based on the following results: A gives two tribromobenzenes in comparable amounts B gives three tribromobenzenes, one of them in minor quantities C gives only one tribromobenzene
- Rank the following groups in order of decreasing priority. −H, −CH3, −Cl, −CH2ClI put in the answer for compound A, (dimethyl‐lambda4‐sulfanylidene)cyclopropane, and the product 9‐oxadispiro[2.0.44.13]nonane, in the boxes, but it says it's incorrect. What am I not getting?Thank you for your help!Acetonitrile (CH3CN) has resonance at 1.97 ppm, whereas methyl chloride (CH3Cl) has resonance at 3.05 ppm, even though the dipole moment of acetonitrile is 3.92 D and that of methyl chloride is only 1.85 D. The larger dipole moment for the cyano group suggests that the electronegativity of this group is greater than that of the chlorine atom. Explain why the methyl hydrogens on acetonitrile are actually more shielded than those in methyl chloride, in contrast with the results expected on the basis of electronegativity
- Rank the following groups in order of decreasing priority. −F, −NH2, −CH3, −OHRings + Unsaturation --- Hydrogenation If compound A C51H81BrN5O3P3 is hydrogenated to give compound B C51H101BrN5O3P3. How many rings does compound A have? Assume that P has a valency of 5. Would the answer be 4 rings? Formula -> unsat + rings = 1+C +N/2 - H/2 - X/2Can you please draw and show the mechanism for the changes to help with understanding how phenolpthalein changes rather than just words? As little hard to follow.