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In preparing a standard solution of K3[Fe(CN)6], 0.1248 g of the solid was weighed using an analytical balance with an uncertainty of 0.1 mg. Then the solid was dissolved and transferred to a 50 ml volumetric flask and the flask was filled to volume with water. Using a transfer pipette, you transferred 1 ml of the solution to a 100 ml volumetric flask and the flask was filled to volume with water. Calculate the molarity of the final solution with uncertainty. All the glassware used was Class A. The tolerances of Class A glassware can be found at https://www.titrations.info/pipette-burette.
The first ionization energy of Bismuth is E_i1 = +703 kJ/mol. What is the longest possible wavelength of light that could ionize an atom of bismuth
The Ka of a monoprotic weak acid is 5.48 × 10-3. What is the percent ionization of a 0.142 M solution of this acid?
what will be the final concentration of the seawater at 20 °C when reverse osmosis stops? Assuming that seawater has a total ion concentration (a.k.a colligative molarity) of 1.10 Mc, calculate how many liters of seawater are needed to produce 15...
The individual standard electrode potentials do not indicate anything about tendency to gain electrons. The cell potential of the entire cell does.
Suppose a reaction has a standard Gibbs-free energy of 2.90 kJ/mol, calculate the relative ratio of product to reactant.
Calculate the value of Ecell (Standard reduction potentials) for the reaction above. Shwo your work and explain why this value implies that the reaction is product favored.
Problem- Carbonic acid [H2CO3] partially ionizes to bicarbonate and carbonate. At what pH does the bicarbonate concentration equal to the carbonate concentration. pKa of carbonic acid: 6.3 and pKa of bicarbonate: 10.3
calculate the work required to expand the cell surface. Assume the cell is surrounded by water and that T=310K.
Free radicals are important in many environmentally significant reactions. For example, photochemical smog, which forms as a result of the actions of sunlight on air pollutants, is formed in part by the following two steps.
Lipids are soluble in organic solvents Lipids are found in cell membranes All lipids contain fatty acids There are many different types of lipids Some hormones are lipids
Given a pure sample that is known to be either pure benzoic acid or 2-naphthol, describe a procedure you might use to determine the identity of the sample, assuming spectroscopy is not available.
A 45 kg sample of water absorbs 345kj of heat. If the water was initially at 22.1c what is its final temprature
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