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The Wittig reaction involves coupling between a phosphonium ylide and a carbonyl-containing molecule. If a chemist wants to use the Wittig reaction to synthesize 3-methyl-3-hexene, which reactants should be used
If R = 0.0821 liter-atmospheres/mole-degree K, the flask volume is 275 ml, the pressure is 775 torr., calculate the density of the vapor for CH2Cl2 at 75C 2.
Given a relative reactivity of 5.0:3.5:1.0 (tertiary:secondary:primary) hydrogens,calculate the expected percentage of each of the three reaction products expected in the chlorination of n-pentane?
How many moles of (NH4)3PO4 are present in 100.0 mL of 2.50 M (NH4)3PO4?
Calculate the nuclear binding energy per mole of nuclei of and the binding energy per mole of nucleons for 31P. The required masses (g/mol) are: 1 1H = 1.00783; 1 0n = 1.00867; 31 15P = 30.97376
A 2.5-L sample of a 6.3M NACl solution is diluted to 75L.What is the molarity of the diluted solution?
the enthalpy of formation of ethanol, C2H5OH, is -277.0 kJ/mol at 298.15k. calculate the enthalpy of combustion of one mole of ethanol, assuming that the products are CO2 (g) and H2O.
Given the following equilibrium constant at 25 C, calculate the equilibrium constant for the unknown reaction below.
when 1-bromo-2-methylhexane undergoes solvoysis in methanol, four major products are formed.
For the reaction: PbCl2(s) ? Pb2+(aq)+2Cl1-(aq), what is Q* when 3.9 mL of 0.080 M lead nitrate is added to 13 mL of 0.020 M sodium chloride? Ksp of lead chloride is 1.6 x 10-5 M3.
Determine qp for this reaction using deltaH = qp *Just scratching the surface on enthalpy, the help in understanding the process in full is much appreciated
For a certain reaction delta H = -76.0 kJ and delta S= -234 J/K, if n=3 calculate E(standard) for the reaction at 25 degrees celsius
given that, for H2C2O4(aq), Ka1 = 6.5 x 10-2 and Ka2 = 6.1 x 10-5. Don't forget that Kw = 1 x 10-14.
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