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Bob Knowlton was sitting alone in the conference room of the laboratory. The rest of the group had gone. One of the secretaries had stopped and talked for awhile about her husband's coming induction into the army and had finally left. Bob, alone in the laboratory, slid a little further down in his chair, looking with satisfaction at the results of the first test run of the new photon unit.
Set up the problem by listing the reactions unknowns equations and knowns b.) Calculate the concentrations of all chemical species present in the solution, and the pH.
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [N2]eq = 3.6 M, [O2]eq = 4.1 M, [N2O]eq = 3.3 × 10-18 M.
A 100.0 mL sample of .20 M HF is titrated with .10 M KOH. Determine the pH of the solution after the addition of 100.0 mL of KOH. The Ka of HF is 3.5*10^-4
In our Ochem lab for nitration of bromobenzene we didn't further seperate the product mixture of 4-bromonitrobenzene and 2-bromonitrobenzene and yet we have to calculate the percent yield of the mixed product using percent distribution
the atomic mass of chlorine is listed as 35.454 amu on the periodic table. it has two naturally occurring isotopes, Cl-35 and Cl-37. what are the approximate percentages of each?
A 7.31 liter sample of a gas at 50 degrees celsius and 2.82 atm pressure is subsequently compressed to 0.546 liters. in response to being compressed, teperature increases to 72 degrees celsius. what is the pressure of the gas after compression
which hydroxide precipitates first as NaOh is slowly added to the solution? b) what is the molar concentration of the first cation precipitated when the other cation just starts to precipitate out of solution?
34.62mL of 0.1510M NaOH was needed to neutralize 50.0mL of an H2SO4 solution. What is the concentration of the original sulfuric acid solution?
Explain why does the conductivity in semiconductors increases with increasing temperature while the conductivity of metals decreases
Calculate the concentrations of all species in a 1.08 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
Copper has two naturally occurring isotopes. Cu-63 has a mass of 62.939 amu and relative abundance of 69.17%. Use the atomic weight of copper to determine the mass of the other copper isotope. Express your answer using four significant figures
Question- What volume (mL) of an aqueous solution that is 38.00 % by mass hydrochloric acid (conc) and has density of 1.17 g/mL must be diluted with water to make 300 mL of 3.90 M hydrochloric acid
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