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(a) How many grams of NaHCO3 (FM 84.007) must be added to 4.00 g of K2CO3 (FM 138.206) to give a pH of 10.80 in 500 mL of water?
(b) What will be the pH if 100 mL of 0.100 M HCl are added to the solution in part (a)?
(c) How many milliliters of 0.320 M HNO3 should be added to 4.00 g of K2CO3 to give a pH of 10.00 in 250 mL
Determine the magnesium content (in ppm) of a 100.00 mL sample of drinking water if the following data were obtained. Titrant is 0.0551 M EDTA, 12.41 mL were used when an aliquot of the sample was at pH 13.0, 18.63 mL were used for an aliquot at p..
What is the maximum concentration, in mol/L and mg/L, of Cu^2+ and Zn^2+ in a solution that contains both ions if the pH is (a) 10.00, (b) 11.00, (c) 12.00
What is the pH of a solution with a hydronium ion concentration of 1.0 x 10-3 mole per liter
The specific heat capacity of the solution produced was 4.20 J/g•°C, and final temperature reached was 34.91°C. How much heat was produced by the dissolution
A solution of NaF is added dropwise to a solution that is 0.0144 M in Ba^2+. When the concentration of F^- exceeds __________ M, BaF2 will precipitate. Neglect volume changes. For BaF2, K sp = 1.7 X 10^-6.
What is the mass of a piece of magnesium wire which produces 39.30 mL of hydrogen gas collected over water at 23 degrees celsius
a. What is the equilibrium constant expression for the reaction if the equilibrium constant is 78? b. Does the equilibrium mixture contain more products or reactants?
Elucidate why nonafluoro-2-methyl-2-propoxide is a much weaker base than tert-butoxide? Explain how do you account for the difference in acidity between Meta and para-nitrophenol
Algebraically substitute in the symbols for the specific heat capacities for the copper and water (Cs,Cu, and Cs,H2O), the symbols for masses (mCu and mH2O), and the symbols for the temperature change (Tf, Ti, Cu, and Ti,H2O).
Why is it easier to tear a paper towel off a full roll than off a used (smaller) roll? What are the two forces that normally act on you when you are standing on the Earth? Are these a third-law force pair? Explain
When an ion-selective electrode for X was immersed in 0.0490 M XCl, the measured potential was 0.0470 V. What is the concentration of X when the potential is 0.0620 V?
the average ph of precipitation in rural areas is 7.00. assuming that the phnbspis controlled by the carbonate system
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