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Compound A (C11H16O) has a band in the IR spectrum at 3450 cm-1 (strong, broad) and does not react with pyridinium chlorochromate (PCC) in CH2Cl2. Compound A does react with HBr to give compound B (C11H15Br). Compound B reacts with potassium t-butoxide to give compound C (C11H14). Ozonolysis of C followed by treatment with Zn and water gives CH3CHO and compound D (C9H10O). The proton NMR spectrum of compound D is given below. Treatment of compound D with ethyl magnesium bromide yields A. Draw the structures of compounds A, B, C, and D. 1H NMR of D: ? 8.1-7.5, multiplet, 5H; 2.85, quartet, 2H; 1.30, triplet, 3H.
Calculate the solubility of carbon dioxide in water at an atmospheric pressure of 0.38 atm.Carbon Dioxide has a mole fraction of
A 50.00-mL sample of white dinner wine required 24.76 mL of 0.03867 M NaOH to achieve a phenolphthalein end point. Express the acidity of the wine in terms of grams of tartaric acid
what mass of limestone is required to remove all the sulfur dioxide formed by the combustion of 7.2 104 kg of coal that is 0.33 mass % sulfur?
Write a mechanism for the acid-catalyzed transesterification reaction of ethyl acetate with 1-butanol, which gives butyl acetate.
An element has two naturally occurring isotopes. Isotope 1 has a mass of 120.9038 amu and a relative abundance of 57.4%, and isotope 2 has a mass of 122.9042 amu.
Use IR tables to locate absorption bands of the stretching frequencies of the alkyne C
The normal boiling point of liquid bromine is 58.8oC, and its molar enthalpy of vaporization is Delta Hvap = 29.6 kJ/mol. (a) When Br2(l) boils at its normal boiling point, does its entropy increase or decrease?
calculate the theoretical moles of NaOH that should be necessary to reach the equivalence point
Calculate the equilibrium constant for the reaction - flask at a certain temperature according to the reaction
Number of protons & the number of neutrons in the nucleus of the element boron and potassium and the number of electrons in their 1st & 2nd quantum shells?
what is the molarity of a solution that contains 5.2g urea (molecular weight = 60 amu) in 250g of benzene?
The average concentration of strontium ion in seawater is 8.00 mg of strontium ion per kg of seawater. What is the molarity of the strontium ion if the density of the seawater is 1.025 g/mL.
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