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Provide the structures of testosterone and estrone. How many stereoisomers can exist for cortisone? Explain would these stereoisomers have identical biological activity?
A large number of polycyclic benzenoid aromatic hydrocarbons are known. One of these, benz/a/pyrene, is a powerful carcinogen found in tobacco smoke.
State the balanced net equations for the reactions that take place when 0.1 M solutions of cadmium(II) nitrate and ammonium carbonate are mixed, when 0.1 M solutions of potassium hydroxide and iron(III) acetate are mixed, and while 0.1 M solutions..
A certain reaction has ?H equal to 11.57 kJ/mol. This reaction is normally run at room temperature (25?C). At what new temperature should the reaction be run so that K is twice its value at 25?C?
A compound of forumula C14H12 gave a positive Baeyer test and burned with a yellow, sooty flame. Treatment with ozone followed by hydrolysis in the presence of zinc gave formaldehyde as one of the products.
olutions of sucrose (table sugar, C12H22O11) are used in high speed centrifuges to separate the parts of a biological cell. How many liters of 3.53 M sucrose contain 111 g of solute
The calorimeter contains exactly 361 g of water and the temperature increases by 1.126°C. Compute the heat given off by the burning Mg, in kJ/g and in kJ/mol.
How many moles of oxygen will be produced if 27.6 grams of Al are produced?
A 41 kg person drinks 280. g of milk, which has a "caloric" value of approximately 3.0 kJ/g. If only 18% of the energy in milk is converted to mechanical work,
To resolve an object in an electron microscope, the wavelength of the electrons must be close to the diameter of the object. What kinetic energy must the electrons have in order to resolve a protein molecule
what is the proper technique to measure the temperature of a liquid in a beaker with a thermometer?
there is 10gl of carboxylic acid in boiling water. what is the minimum amount of boiling water needed to dissolve a
buffer solution from a solution of 0.200-M aniline, C6H5NH2, a weak base, and a solution of 0.100-M hydrochloric acid. take the pKa of aniline to be 9.13.
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