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Consider a solution of 0.1M ZN2+ and 0.1M CU2+ that is saturated with H2S. The solubility product constants for XNS and CUS are 1.1x10^-21 and 6x10^-36, respectively. 1)How do you expalin that both ZnS and CuS will precipitate at pH8. 2) Show that only CuS will precipitate when (H3O+) = 0.3M.
A patient requires 50 mg of active drug. Given in pill form, all of the drug is absorbed by the gut into the blood stream. If the active form is the protonated form, and the drug has a pKaof 6.8, how many milligrams must be given to ensure the pro..
what are the boiling point and freezing point of a 4.33 m solution of naphthalene in benzene? the boiling point and
Trifluoroiodomethane, CF3-I, undergoes free radical addition to alkenes. Explain the fact that the free-radical addition of this compound to 2-methyl-2-butene is faster than its addition to 1-pentene.
How many amps are required to produce 28.7 g of lithium metal from a sample of molten lithium chloride
A block of Iron has a mass of 483 g. What is the mass of a block of Graphite that has the same volume as the block of Iron?
when elemental sulfur is heated with a gas forms that contains only sulfur and fluorine. the following tests were
A buffer solution is prepared by adding 15.00 g of sodium acetate ( NaC2H3O2) and 12.50 g of acetic acid to enough water to make 500 mL of solution.
The concentrations of ozone in Los Angeles has been measured at 441 ppb. Los Angeles sits at an altitude of 7400 ft where the atmospheric pressure is only 0.67 atm. Calculate the partial pressure (in atm) of ozone at 441 ppb if the atmospheric pre..
a gas sample occupies 4.20 l under a pressure of 800 torr at 350K.At what temperature will it occupy 3.60 L at the same pressure?
CO2 has a mol wt of 44 Da. 5.0 micro liters of CO2 is added to 525 mL of air. The pm of CO2 by volume and weight is/are?
a solution is prepared by dissolving 20.0 g of NaI in enoug water tomake 300.mL of solution How many moles of ions are in 25.mL of thesolution?
The mass spectrum of an organic compound shows the relative abundances of M to be 36.44% and M 1 to be 8.277%. Assuming the peaks are caused by 12C and 13C isotopes
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