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Suppose that a sample containing P-32 has an activity 1000 times the delectable limit. How long would an experiment have to be run with this sample before the radioactivity could no longer be detected? And what is delectable limit?
Napthalene has a log Kow of 3.33. Estimate its soil-water partition coefficient normalized to organic carbon.
Define a 100ml sample of water is taken from the Pacific Ocean, as well as the water is allowed to evaporate. The salts that remain mostly NaCl have a mass of 3.85g. Compute the original concentration of NaCl in g per liter in the water sample.
How many grams of cholesterol are in 230 mL of blood? The concentration of cholesterol (C_27H_46O) in blood is approximately 5.0mM.
The reactants A and B are mixed, and the reaction is timed until a color change occurs. The data is as follows-
A solid mixture consists of 51.0 g ofKNO3 (potassium nitrate) and 9.0 gofK2SO4 (potassium sulfate). The mixture is added to 130g of water. If the solution described in the introduction is cooled to 0 degrees celsius
suppose that a hypothetical element consists of a mixture of two isotopes. one isotope having mass 44 amu is present in
Calculate ?Svap for each of the liquids. Do all the liquids obey Trouton's rule? With reference to intermolecular forces, can you explain any exceptions to the rule?
How many atoms of carbon are present in 73 g of a compound that is 83.3% carbon, by weight?
disulfur dichloride is produced by reacting chlorine gas with molten sulfur.s8 4 cl2 --gt 4 s2cl2what is the percent
In some industrial processes, sulfite is added to remove dissolved O2 to prevent corrosion of pipes. Write the balanced overall chemical reaction for reduction of dissolved O2 by sulfite (SO32-)
If 27.5 mL of 0.100 M NaOH are required to neutralize 1.22 g of an unknown acid, HA, what is the molecular weight of the unknown acid
The same organism can grow on a medium lacking all three amino acids. Explain these observation(Biochemistry expalanation and detailed)
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