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1,3-Butadiene can react with NBS (conditions generating Br2), producing 1,2 and 1,4- addition products. At different reaction temperature, the ratio of the two products is different. (a) Write the reaction equation, (b) indicate which product is predominant at low temperature, (c) which product is predominant at high temperature, and (d) draw a reaction energy diagram explaining your answers in b and c.
In a crazy situation the Oylan Vinegar Company has 10,000 gallons of vinegar with a concentration of .114 M. It also hass a .68% acetic acid by mass
compatible combination was titrated with 0.1021M standardHCl. It took 20.97mL to reach the phenolphthalein end point and 42.00mL to reach the bromocresol greenend point.
Draw a Lewis structure for each of the following compounds. Specify the hybrid orbitals that overlap to form each bond. Then label each bond as a pi or sigma bond
The Cl- is at equilibrium across the membrane while the protein is inside the cell and cannot permeate the membrane. Determine the concentration of Pr+/- (in M)?
Part A- Consider the titration of 50.0mL of 0.20 M NH_3 K_b=1.8X10^-5 with 0.20 MHNO_3. Calculate the pH after addition of 50.0 mL of the titrant.
In the ground state of the Hydrogen atom the energy of the electron is E0 = -13.61 eV. What is the energy of the electron in the ground state of the He+ ion
A wick of filter paper is placed in a TLC developing jar, and the atmosphere in the jar is saturated with solvent before a plate is developed. What would happen if a plate were developed in a jar with an atmosphere not saturated with solvent vapor
A proton in a linear accelerator has a de Broglie wavelength of 138 pm. what is the speed of the proton?
The Henry's Law constant for carbon dioxide gas in water at 25 oC is 0.031 mol/L-atm. Calculate the solubility of carbon dioxide in water at 25 oC in moles/L if the partial pressure of carbon dioxide in the headspace above a water sample is 1.68 a..
The mass spectrum of an organic compound shows the relative abundances of M to be 34.83% and M 1 to be 6.027%. Assuming the peaks are caused by 12C and 13C isotopes
Calculate the concentration of an aqueous solution of Ca(OH2)that has a pH of 12.57? Express your answer using two significant figures.
Draw a Lewis structure for H3C-NO2. Both oxygen atoms are directly attached to the nitrogen atom. If you take formal charge considerations into account, how many -bonds are in the molecule?
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