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State the mass balance and charge balance equations for a solution containing .200F La2 (SO3)3 and .100 F Na2S (pka 1 and pk2 for H2SO3 are 1.852 as well as 7.157 respectively and 7.02 and 13.50 for H2S respectively)
Which of the acids in question #3 would be the best choice to create a buffer with pH = 7.35? If you had 250.0 mL of a 0.20 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base would be required to make the buff..
Which of these ions best represents the conjugate acid in a "phosphate" buffer at physiological pH? Explain. H2PO4^-, HPO4^2-, PO4^3-
At 0.0 degrees C, if the volume of air is 1.5 mL and the pressure of the atmosphere that day is 685 mmHg, what is the number of moles of air?
When cobalt chloride is added to pure water, the CO ^2+ ions hydrate. The hydrated form then reacts with the Cl^- ions to set up equalibrium shown here
What is the molarity of that forms when 20.0 of zinc completely reacts with according to the following reaction? Assume a final volume of 285 .
CH3OH burns in oxygen (O2) to from carbon dioxide (CO2) and water(H2O). Equal masses of ten grams of gaseous CH3OH and O2 are placed in an evacuated flask of five litres at the temperature of 25 degrees celsius.
What is the pH (to nearest 0.01 pH unit) of a solution prepared by mixing 52.0 mL of 0.125 M HF and 78.0 mL of 0.0465 M NaOH
In the Anfinsen experiment refolding of RNase subsequent its denaturation with urea and beta-mercaptoethanol resulted in fully functional enzyme. conversely, denatured proteins do not always restart proper folding in vitro. Provide a possible scen..
A sample of 1.00 mol perfect gas molecules at 300K with Cp,m=7R/2 is put through a constant-volume heating to twice its initial temperature. Calculate q, w, delta U, and delta H for each step.
answer the following questions for the soil data listed below.nbspnbspnbspnbspnbspnbspnbspnbsp exchangeable cations
What is the pH of a one liter mixture of .15 M nitrous acid and .20 M sodium nitrite after .020 mol of HCl have been added (no change in volume). (Ka for nitrous acid is 4.0x10^-4.
The size of a diamond is measured in carats. (1 carat=.200 g) The density is 3.51 g/cm3. How many carats is a diamond that measures .
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