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A solution of Na2SO4 is slowly added to a mixture containing 0.010 M of Ba(NO3)2 and 0.010 M Sr(NO3)2. Determine the concentration of SO42- necessary to precipitate BaSO4 and SrSO4. Which compound, BaSO4 and SrSO4, precipitates first? What is the SO42- concentration when the second ion begins to precipitate?
Ksp for BaSO4 is 1.1 x 10-10Ksp for SrSO4 is 3.2 x 10-7
Suppose that excess Cu(s) is added to 1.0 L of 0.015 mol L^-1 Fe(NO3)3(aq), with no change in volume. What is the equilibrium concentration of Fe3+. Justify any approximations you make.
water as a solvent for TLC of amino acids have opposed to a 90:7:3 acetate/water/propanioc acid?
Before the collision what is the complete Eigen-function of the molecule? assuming the surface is located at x=0, and V (x =0)=0 and tha tthe molecule is located at a position X>>0. which means the molecule can be treated as a free mass in the re..
How would the boiling of a liquid be affected if it measured on top of mount everest?
Describe the transition using term symbols. Compute the wavelength, frequency and wavenumber of the transition. by how much does the mean radius of the electron change due to the transition.
Which of the following mixtures will be a buffer when dissolved in 1 liter of water?
Calculate the time needed for the amount of ethane to fall from 1.43 10-3 mol to 2.00 10-4 mol in a 500. mL reaction vessel at 700.°C.
What volume of distilled water do you need to add to dilute 1 mL of a 100 mM Tris-HCl buffer solution to a concentration of 1 mM
Determine which structure do you expect to contribute the most to the actual structure of BrO 4 - keep in mind to take in expanded octets, as suitable?
Menthol, the organic substance in the pills can smell menthol cough drops, consisting of carbon, hydrogen and oxygen. A sample of 100.1 mg menthol burns in oxygen, yielding 282.9 mg of carbon dioxide and water 115.9mg.
A sample of dry air contains 210 mL of oxygen, 780 mL. of nitrogen, and 10 mL of all other gases. What is the pressure in mm of Hg due to the nitrogen if the total pressure was 1000 mm
PVA (polyvinyl alcohol) strands can form hydrogen bonds between different parts of the same strand. Illustrate how this can occur by using a sketch to show the hydrogen bonding.
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