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Predict the major organic product formed in the addition of HBr to 2,3-dimethyl-2-butene. Provide a stepwise mechanism for the reaction, showing all electron movement using the curved arrow convention. Sketch a qualitative energy level diagram for the mechanism labeling all relevant points.
Construct a cel from Ni(s), Ni^2+(l), Cd(s) and Cd^2+(l) a. What would be the anode and what would be the cathode? b. indicate the half reactions happening at each the anode and the cathode
The simplest carbene known is methylene. The non-bonded electrons can be paired (singlet methylene) or unpaired (triplet methylene).
Subtilisin (Mr 27600) is a bacterial protease that can catalyze hydrolysis of certain amino acid esters and amides. Subtilisin does have a problem, in that it becomes inactivated by oxidation of a methionine Met-222. Subtilisin mutant with Cys rep..
How many moles of photons with a frequency of 1.22e14 hz are necessary to produce
A solution of ethanol (C2H5OH) in water is prepared by dissolving 60.0 mL of ethanol (density = 0.79 g/cm3) in enough water to make 235.0 mL of solution. What is the molarity of the ethanol in this solution?
What is the pH at the point in a titration at which 20ml of 1.0M KOH has been added to 25ml of 1.0M HBr
What is the theoretical percent, by weight, of calcium in Ca(OCl)2
A sample of hydrogen occupies a volume of 1.20 liters at a pressure of 425 kilapascals. If the temperature of the gas is constant, what would the new volume of the gas be at 615 kilapascals?
Calculate the pH of the solution when 20.00 mL of 0.10 M CH3CO2H (Ka= 1.76 x 10^-5) has been titrated
A sample of 54.7 g of HCl gas is dissolved to make 1L of solution. What is the molarity of the solution?
A 24.0 g sample of nitrogen gas reacts with an excess of hydrogen gas to give an actual yield of 3.85 g NH3. What is the percent yield for this reaction? Reaction: N2(g) + 3 H2(g) ? 2 NH3(g)
Calculate the work, heat, energy and enthalpy change upon: a) expansion by 3.3 L at p=const (isobaric). b) isothermal expansion by 3.3. L against a constant external pressure of 30.0 kPa c) reversible isothermal expansion by 3.3 L.
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