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What is the largest concentration of S-2which is attainable before the onset of precipitation for MnS in a 5.602 x 10-3M solutions of Mn(NO3)2? Please report your answer as a -log value. Ksp=MnS = 1.4 x 10-15.
The letter designations for the first four sublevels with the number of electrons that can be accommodated in each sublevel are what
a student preformed an analysis of a sample for its calcium content and got the following results14.92 14.91 14.88
Concentrated HF, molar mass 20.01 g/mol, comes into the lab as a 49.0% solution with a density of 1.18 g/ml. What is it's molarity
The carburizing gas holds the surface composition at 1% carbon for all t > 0. If D=1.4 x 10^-7 cm^2/sec: (a) Calculate the time required at the carburizing temperature
Problem- Experimentally, acetate buffer HC2H3O2-C2H3O2^- can be prepared in different ways. Calculate the approximate pH of an acetate buffer solution prepared by mixing equal volumes of 0.10 M HC2H3O2 and 0.10 M NaC2H3O2 (Ka, HC2H3O2 = 1.8 x 10^-5..
What is the name of the value that can be calculated that expresses with a number how precise and how accurate each group is?
A white solid unknown is readily soluble in water, and upon treatment of this solution with HCl, a colorless, odorless gas is evolved. This gas reacts with Ba(OH)2 to give a white precipitate. What anion is indicated
What is the average current passing through a solution of NiSO4 if 1.25 g of Ni were deposited in 4.07 hours? i = A
A 25ml solution of quinine was titrated with 1.00 M hydrochloric acid, HCl. It was found that the soluiton contained 0.125 moles of quinine. What was the pH of the solution after 50 ml of the HCl solution were added? Quinine is monobasic with pKb=..
At 373 K, Keq = 2.39 for the following reaction: SO2Cl2(g) = SO2(g) + Cl2(g) In an equilibrium mixture of the three gases, the partial pressures of SO2Cl2 and SO2 are 3.31 atm and 1.59 atm, respectively.
If 3.0g of N2 gas has a volume of 0.50 L and a pressure of 5.0 atm, what is its Kelvin temperature
Problem- A mixture contains both potassium phosphate and potassium chloride. What is the percentage of potassium phosphate in this mixture if reaction of 0.401 g of this mixture with excess copper ii chloride yields 0.213 g of copper ii phosphate?..
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