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The phosphate ion, PO43-, can exist in aqueous solutions if the pH is sufficiently high. If the pH of such a phosphate-containing solution were gradually lowered by addition of HCl or some other strong acid, what three protonated phosphate species would be generated? (Specify the chemical formula and name of each.)
You prepare a suspension by dispersing 20.0 g solid compound with the aqueous dispersant (outer phase of the suspension) to a final volume of 100.0 ml. The dispersant contains 10% w/v glycerol and 0.5% w/v polysorbate 80. The density of the solid ..
Predict whether a precipitation reaction will occur when aqueous solutions of ammonium sulfate and calcium acetate are mixed. Write the net ionic equation.
explain what would happen to the cell during the process of osmosis and why?
What products would expect from acid-catalyzed hydration of the following alkenes?
What is the maximum number of electrons that can be identified with each of the following sets of quantum numbers? In some cases, the answer may be "none."
a compound is composed of only C.H and O. the combustion of a 0.519-g sample of the compound yields 1.24g of CO2 and 0.255g of H2O.
Calculate the standard cell potential given the following standard reduction potentials: Al 3+ +3e ? ?Al;E ? =?1.66 V Fe 2+ +2e ? ?Fe;E ? =?0.440 V
Calculate the molar concentration of illinic acid and of its conjugate base illinate ion (in moles/L; M) in a 3 M illinate buffer at pH 7.5. The pKa of illinic acid is 6.7.
what is the energy uncertainty associated with a short pulse of laser light that lasts 4.8fs
A sample of zinc weighing 2.077 g is dissolved in 2.00 M HCl. What (minimum) volume of HCl is required to dissolve the Zn? (Zn dissolves in HCl to form Zn2+
No inflection points were observed with the HCl titrations but two were observed in the titration with NaOH. One occurred after 3.29 mL of titrant had been added and another after a total of 18.61 mL of NaOH had been added. Calculate the concentr..
For such systems, it is often observed that the ratio of the vapor pressures of the pure species is nearly constant over a considerable temperature range. Let this ratio be r, and determine the range of values of A, expressed as a function of r, f..
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