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Choose the correct answer of the following, explain why it is true, and explain why the other choices are untrue: (A) high pE is associated with species such as CH4, NH4+, and Fe2+; (B) low pE is associated with species such as CO2, O2, and NO3-; (C) values of pE in bodies of water range from about 1 x 10^-7; (D) pE is a number, but cannot be related to anything real, such as is the case with pH; (E) pE uses convenient numbers to express electron activity over many orders of magnitude.
Given a balanced chemical equation and enthalpy of reaction, relate energy change to amount of reactant or product
WHen 0.075 moles of ammonium sulfate ((NH4)2SO4) are dissolved in enough water to make 337 mL of solution, how many ammonium ions are present?
Suppose 250.0 mL of 1.00 M HCl and 250.0 mL of 1.00 M NaOH, both initially at 21.0°C, are mixed in a thermos flask. When the reaction is complete, the temperature is 27.8°C. Assuming that the solutions have the same heat capacity as pure water, co..
What dansylated amino acids would be isolated after reaction of S-F-H-Y-W-C-T-L-C-K-L-I-N-D-S with dansyl chloride an the complete with hydrolysis
The Lyman series in the hydrogen atom corresponds to transitions that originate from the n=1 level in absorption or that terminate in the n=1 level for emission. Calculate the energy, frequency, and wavelength of the least and most energetic transiti..
Propose a synthesis of 1,2-butanediol from ethyne as the only organic starting material. Your ethyne supply may be split to make different intermediates that, in turn
What is the vapor pressure of SiCl4 (in mm Hg) at 23.5 C? The vapor pressure of SiCl4 is 100 mm Hg at 5.4 C and Delta H vap
Determine how long will it take for a sample of N2O5 to decay to sixty percent of its initial value?
Which monatomic ion has a charge of 1+ and the electron configuration [Kr]4d105s2? Write the element symbol and charge.
A flask contains 0.180 of liquid bromine br2, . Determine the number of bromine molecules present in the flask.
Why is a mixture of alcohol and water used, rather than simply water itself, to saponify the fat or oil
What kinetic energy must the electrons have in order to resolve a protein molecule that is 2.30 nm in diameter? Take the mass of an electron to be 9.11× 10-31 kg.
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