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1.) From the 1H NMR spectrum of dibenzalacetone can you deduce what stereoisomer(s) of dibenzalacetone is (are) formed? The chemical shift of the alkene protons is downfield from the expected resonance. What is the shift due to?
2.) how owuld you change the procedures in this experiment if you wished to synthesize benzalacetone C6H5CH=CHCOCH3?
3.) Assign the peak in the IR spectrum of the product that is at 1639 cm-1. Is this the normal absorption for this functional group? In benzaldehyde there is an absorption at 2738 cm-1 but it is absent in the IR of dibenzalacetone. Why?
4.) In the 13C NMR of dibenzalacetone, there are seven signals at 188.8, 143.2, 134.8, 130.4, 128.9, 128.4, and 125.4 ppm. This indicates that there are equivalent carbon environments in the molecule. Draw the molecule with the correct steriochemistry and using numbers, indicate which carbons are in equivalent environments.
Draw the base pairing between 8-oxoguanine and cytosine and 8-oxoguanine and adenine. Use single bonds to represent hydrogen bonds.
so I have the reaction CuCl2 + H4ClSiO4. what I dont have is what this makes afterward, could someone please explain to me what the Molecular, total ionic and net ionic equations would be
Classify each reactant as the reducing agent, oxidizing agent, or neither.
what quantity graphed versus time yields a straight line for a zero-order reaction and what is the equation for the half life time. b) identify quantity versus time for a first order reaction and equation for half life.
the reaction between trans-2butene+potassium tert-butoxide+CHCl3 produces which: meso compund or pair of enantiomers. Explain
The temperature inside a balloon is raised from 25.0 degrees C to 250.0 degrees C. If the volume of cold air was 10.0 L, what is the volume of hot air
The photochemical reaction of 2,4-dimethylpentane with molecular chlorine affords a mixture of monochlorinated alkyl halides. Draw teh structures of these products and predict the molar ratio when the reaction is run at 25C
Would applying a high pressure stabilize the CsCl form, or the NaCl form of this compound? (hint: calculate the volume per formula unit)
the difference between E and Z formations for organic molecules and how to establish priority according to the Cahn-Ingold-Prelog rules.
The equilibrium constant for the reaction H2(g) + I2(g) 2HI(g) is 62.5 at 800 K. What is the equilibrium concentration of I2 if at equilibrium [HI] = 0.22 M and [H2] = 0.10 M
What mass of carbon dioxide is produced by the complete combustion of 5.50 grams of hexane, C6H14
The second virial coefficient B and the third virial coefficient C for A are -0.021 L/mol and 0.0012 L^2/mol^2 at 273 K respectively. By what percentage does the compressibility change
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