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Problem- The Kb for an amine is 7.280x10^-5. What percentage of the amine are protons red if the pH of a solution of the amine is 9.408? Assume that all OH- came from the reaction of B with H2O
When the concentration of Zn2+ ion is 0.45 M, the measured voltage of the Zn-Cu zell is 0.40 V. What is the Cu2+ ion concentration
As the excess of nickle is titrated by EDTA(y4-), the comples with cyanide does not react. if 12.75mL of an unknown CN- solution is treated with 25mL of a 0.0140 M Ni2+ solution, the excess of Ni2+ needs10.21mL of 0.012M EDTA afterward. Determine ..
You perform a mass spectral analysis and determine that Sample A has a base peak at m/e = 72 as well as Sample B has a base peak at m/e = 58. For alkyl amines such as A and B, base peaks result from cleavage alpha to the N atom. Allot structures t..
If a drop of water clings to the outside of the foil cap and is not removed, how would the experimentally determined molecular weight be affected? Too high or too low?
Write equations for the ionization of the following acids. Which ones ionize only slightly?
The halogenation of a hydrocarbon (RH): RH + X2 ? RX + HX may proceed by the mechanism below. Derive the rate law for the mechanism using the steady state approximation. (1) X2 ? 2X (2) X + RH ? R + HX (3) R + X2 ? RX +X (4) R + X ? RX
Explain which amino acid would migrate furthest in the direction of the positive electrode during electrophoresis at ph 7.0
Determine the Celsius temperature of 2.49 mol of a gas contained in a 1.00-L vessel at a pressure of 143 kPa
acetyl-coa carboxylase is a key regulatory enzyme in fatty acid synthesis. early studies on the molecular properties of
Balance the following oxidation-reduction reaction, in acidic solution, by using oxidation number method or the half-reaction method. KClO3 + HBr = Br2 + KCl +H2O
Write and balance the given chemical equation and Write a balanced equation for this reaction
The titration requires 34.11 mL of base to neutralize 15.00 mL of the acid. What is the Molarity if acid in the vinegar?
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