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The most amino acids appear bluish purple when treated with ninhydrin reagent. Proline as well as hydrocyproline appears yellow. Propose a reason for this difference?
The voltaic cell described by the balanced chemical equation has an Eo of 0.27 V. Calculate the maximum electrical work (kJ) the cell has done if 3.1400 mol of Cr3+(aq) (Molar Mass - 52.00 g/mol) forms. Round your answer to 3 significant figures.
Many hospitals, and some doctors\' offices, use radioisotopes for diagnosis and treatment, or in palliative care (relief of symptoms such as pain). Some radioisotopes used in medicine are listed below.
the reaction of copper(I) sulfide with oxygen gas as follows: Cu2(s) + O2(g) ? 2Cu(s) + SO2(g) If 0.330 kg of copper(I) sulfide reacts with excess oxygen, what mass of copper metal may be produced
What is the pH of a solution containing 0.10 M propanoic acid (HC3H5O2) [Ka=1.3x10-5] and 0.10 M sodium propanoate after 0.02 mol of HCl is added to 1.0 L of the solution
A sample of an unknown gas effuses in 12.8 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.11 min. What is the molar mass of the unknown gas
Calculate the height of a corresponding column of mercury (in mm) that is at the same pressure as a column of water that is 27.3 inches high.
when steam condenses to liquid water 2.26kj of heat is released per gram. the heat from 168g of steam is used to heat a
A BaSO4 slurry is ingested just before the gastrointestinal tract is x-rayed because it is opaque to x-rays and defines the contours of the tract. Ba2+ ion is toxic, but the compound is nearly insoluble
Describe the changes in the sizes of the sodium and chlorine atoms during the following combination reaction. 2Na(s) + Cl2(g) ? 2NaCl(s)
Dehydrohalogenation of (2R, 3R)-2-bromo-3-methylpentane by a bimolecular reaction produces only (E)-3-methyl-2-pentene and 3-methyl-1-pentene as products. Provide a mechanistic explanation as to why (Z)-3-methyl-2-pentene is not formed.
The temperature of the calorimeter increased from 24.5oC to 26.7oC. If the heat capacity of the calorimeter is 4.46 kJ (oC)-1, then what is the constant volume heat of combustion of this compound, in kilojoules per mole? (Remember to include a "+"..
How would I do that? I have a diagram for a trigonal bipyramidal crystal field and two values are on the diagram. There's a delta 0.19 and a delta 0.79.
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