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A solution is prepared by dissolving 5.32 grams of potassium nitrite (a food preservative, as Clark Griswold would explain) into about100 ml of DI water in a volumetric flask. Enough water is then added to give a total volume of 250.0 ml. What are the equilibrium concentrations and the pH of the resulting solution?
determine the amount of heat (in kJ) given off when 1.42 * 10^4 g of NO2 is produced according to the following equation : 2 No(g) + o2(g) --> 2NO2(g) H = -114.6kj
A 35.0 mL sample of 0.150 M acetic acid (CH3COOH) is titrated with 0.150 M NaOH solution. Calculate the pH after the following volumes of base have been added.
a solid with an irregular shape and a mass of 11.33 g is added to a graduated cylinder filled with water
sample of KHP required 33.86 mL of sodium hydroxide, what was the molarity of the sodium hydroxide solution?
At equilibrium, the concentration of the product methanol was found to be 0.060 M. The value of the equilibrium constant Kc for this reaction is
Oxalate ion, which can be abbreviated ox2-, is a ligand for Cu2+, forming the complex ion Cu(ox)22-. The formation constant for this ion is 3.0 x 108. The solubility of Cu(OH)2 is enhanced in the presence of oxalate
A 130 mL stock solution contains 1.5 M CuF2. When 13 mL of the stock solution is diluted to 25 mL, what will the concentration of F- ions be?
Given the following heat capacities, (assume they are constant over the temperature range in consideration here), calcrulate enthalpy for the reaction 2NO + O2 ->2NO2 at 398k.
These 3 solutions including 2.362 g of Rb2S, 1.635 g of NaClO 4 , and 0.796 g of CuCl 2 , respectively are combined together? now calculate what would be the mass of this precipitae?
Suppose a worker fears being exposed. The source radiates wit 3540 rem at 500.0 cm. what minimal distance (m) should the worker remain?
.20g of methyl alcohol, CH3OH, are dissolved in 16.8g of water, H2O. What is the mole fraction of the solute.
explain the following given for each statement in determining the sequence of peptide with concise (short) but complete response. you must state the specificity of each statement implication in determining the sequence of octapeptide.
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