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Give a stepwise mechanism showing the base-induced formation of diphenyl-acetylene from meso-stilbene dibromide. Use curved arrows to symbolize the flow of electrons.
Compute the number of electrons in a flake of pure gold valued at $0.51. Assume that the price of gold
An ionic crystal unit cell is composed of two ions, X and Y. The empirical formula of this solid is XY2. If the X ions occupy the eight lattice points at the corners of the unit cell and on all six faces
A 455-g piece of copper tubing is heated to 89.5 Celcius and placed in an insulated vessel containing 159g of water at 22.8 degrees Celcius. Assuming no loss of water and a heat capacity of 10.0 J/K for the vessel, what is the final temerature? (c..
A solution containing a mixture of metal cations was treated with dilute HCl and no precipitate formed. Next, H2S was bubbled through the acidic solution
What is the minimum concentration of Mg2+ required to begin precipitating Mg(OH)2(s) in a solution of pH 10.82? For Mg(OH)2
what is the molarity of a solution made when you dilute 35 grams of sodium carbonate to a volume of 3400 ml?
Addition of 0.0125 mol HCL to 150 mL of a 0.150 M formic acid/0.100 M sodium formate buffer results in a pH = _______? Ka of formic acid is 1.8x10^-4
An electrochemical cell is constructed in which one half-cell contains AgN03 solution in contact with an Ag strip, and the other half-cell contains magnesium nitrate solution, Mg(N03h, in contact with a Mg strip.
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.230 M HClO(aq) with 0.230 M KOH(aq). The ionization constant for HClO can be found here.
what is the skeleton equation for heating copperii sulfide in the presence of diatomic oxygen produces pure copper and
magnesium hydroxide is 54.87 oxygen by mass. how many grams of oxygen are in 175g of the compound? how many moles of
read the scenarios below and respond in the form of an essay which should consist of several paragraphs and appropriate
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