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Identify the missing particle in the following equation: 238:92 U --> 4:2 He + ? a) 242:94 Pu b) 234:90 Th c) 242:90 Th d) 234:92 U E) None of these
Calculate the oxidation number of the chlorine in perchloric acid, HClO4.
Give the structure that corresponds to the following molecular formula and 1H NMR spectrum: C7H12Cl2: ? 1.07 (integral = 6203, s); ? 2.28 (integral = 1402, d, J = 6 Hz)
What is stray light. How does it affect the performance of the spectrometer? Can one minimize it in the design of a spectrometer.
the Brackett series of hydrogen has a wavelength of 2626 nm. From what state did the electron originate
the use of phenols such as tert-butylcatechol as free-radical scavengers is based on the fact that phenolic hydrogens
which cation will precipitate first. What minimum concentration of Na2SO4 is required to cause the precipitation of the cation that precipitates first
The atoms in Barium metal are arranged in a body-centered cubic unit cell. Calculate the radius of a Barium atom if the density of barium is 3.5 g/cm3
at 800 ordmc keq 0.0100 for the following reaction2so2g o2g 2so3gwhat is the numerical value for the equilibrium
Using only the common 20 amino acids, how many differnt 4-amino acid-long polypeptides could be made?
Given three acid-base indicators - methyl prance ( end point at pH 4 ) bromthymol blue ( end point at pH 7) , and phenolphthalein ( end point at pH 9) select a suitable indicator for the following titrations.
The Ka for lactic acid is 1.4x10^-4. What is the pH of this buffer after .10 mol of solid NaOH has been added?
The following questions are based on the following reaction, in which Cl has a -1 oxidation number in MnCl2. 4HCl + MnO2 --> Cl2 + 2H2O + MnCl2. What is the oxidizing agent?
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