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1.) What is the maximum concentration of Mg2+ion that can remain dissolved in a solution that contains 0.6418 M NH3 and 0.3482 MNH4Cl? Ksp for Mg(OH)2 is 1.5 × 10-11. Kb for NH3 is 1.8 × 10-5. Answer in units of M.
2.) Remember that Kd is the reverse of Kf. In a 0.20 M solution of the saltCu(NH3)4SO4, the concentration of Cu2+ ion is found to be 9.21 × 10-4 M. What is the dissociation constant of Cu(NH3)+24?
3.47 Annual floods for a stream are normally distributed with a mean of 30,000 cfs and a variance of 1 x 106 cfs2. Determine the average return period Tr of a 32,000-cfs flood in the stream.
What is the difference between a "single beam" and a "double beam" instrument. What are some advantages and disadvantages for each of these instrument designs
What is the mass change (in grams) accompanying the formation of CO and H2 in the water gas reaction?
A gas occupies a volume of 380. ml at 135 °C? At what temperature will the volume of the gas be equal to 535 ml?
Problem- Predict the names and formulas of all of the ionic compounds possible using the following elements or ions Li+, Be2+, Fe2+, Fe3+, F-, Cl-, S2-, C, Ne
if you have 310 mL of water at 25 degrees celsius and 110mL of water at 95 degrees celcius, what is the final temperature of the mixture?
Concentrated sulfuric acid has a density of 1.84 g/cm3 and is 95% by weight H2SO4. What are the molarity and the molality of the solution
Problem- 1) A particular radioactive isotope has a half life of 2.70 weeks. What fraction of the original sample is left after 56.7 days. 2) Which of the following statements is not true of electrolysis
two moles of a gas are compressed isothermally and reversibly at 300 k from an initial volume of 10 dm3 to a final
How many grams of krypton gas will occupy 2.55 liters at 1.25 atm if it occupies 3.75 liters at 0.750 atm at 255 K?
Write balanced reaction equations for the two steps in the synthesis of 2-butoxynaphthalene.
The addition of solid NaSO4 to an aqueous solution in equilibrium with solid BaSO4 will cause what? Ksp at 20 degrees C of BaSO4(s) = 1.5 x10^-9
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