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The molar solubility of lead iodide is 1.45x10^(-3) M at 20 C and 6.85x10^(-3) M at 80 C. What are the values of delta H and delta S for dissolution of PbI2? PbI2 (s) --> Pb^(2+) (aq) + 2I^(-) (aq) You may assume that delta H and delta S are independent of temperature.
2. (a) Calculate the value of critical radius ratio for coordination number of 4 in an ionic compound (that is, convince yourself by calculation that the value given in the text is correct.) (b) repeat for a coordination number of 8.
A water sample is suspected to be contaminated by iron (III) ions. How could you determine if the sample is really contaminated
Calculate pFe2 at each of the following points in the titration of 25.00 mL of 0.02138 M Fe2 by 0.03645 M EDTA at a 7.00 pH: a) 11.00 ml pFe2+ =? b) the equivalence point Ve pFe2+=? c) 20.00 ml pFe2+=
What is the total mass of bovine serum albumin (BSA) in 50 ml of BSA at 4% (wt./vol), given in milligrams? What is the answer in micrograms?
How many ATP would be generated from malate if the equivalent of all its four carbons (don't worry about position) were converted to 4 CO
In Complex III, electrons are transferred between ubiquinone and cytochrome c. Standard reduction potentials are, write a balanced equation for this reaction and calculate the overall cell potential and free energy change.
In the first step of the trypsin mechanism, the side-chain oxygen of Ser 195 attacks the carbonyl carbon of the substrate. Use PyMOL and your model of the enzyme substrate complex to determine the distance between these two atoms.
You inherit a gold bar that measures 7.0 inches by 3.0 inches by 2.0 inches. How many ounces does the bar weigh?
the partial pressures of gas A and gas B respectively are 0.298 ATM and .702 atm if 0.130 mol a 3rd gas is added with no change in volume or temperature, what would the total pressure become?
Use the Rydberg equation to calculate the wavelength in nanometers of the spectral line of hydrogen for which n2 = 4 and n1 = 2.
The IR Spectra of solid benoic acid and liquid acetic acid are shown below. The OH stretch of a carboxylic acid is normally a broad peak from 3500-2500 cm-1. Explain why acetic acid has a very broad intense and prominent peak in this area but benz..
How much heat in Joules was lost by the water. How much heat would be lost by the water if 1 mole of KCl had dissolved. c) What is (Delta Heat reaction) in kL/mole for this process, which can be written as KCl (s) --> KCL (aq)
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