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You need to produce a buffer solution that has a pH of 5.30. You already have a solution that contains 10 (millimoles) of acetic acid. How many millimoles of acetate (the conjugate base of acetic acid) will you need to add to this solution? The pKa of acetic acid is 4.74.
they are stable molecules with normal bonds and are frequently isolated. d. all reactions involve reaction intermediates, but not all have activated complexes. e. they are intermediate structures which have characteristics of both reactants and pr..
Calculate the velocity of a nucleus given that it has 4 neutrons, 4 protons, a wavelength
In an experiment, at this temperature, 1.10 mol of H2 and 1.10 mol of F2 are introduced into a 1.08-L flask and allowed to react. At equilibrium, all species remain in the gas phase.
Propose a structure for an amine of formula C4H9N, which liberates a gas when treated with NaNO2 and HCl. The 13C NMR spectrum is as follows
Ksp for PbCrO4 at 25oC is 2.0 x 10-14. A sample of 1.000 mg of PbCrO4 is added to 1.0 L of water at this temperature.
Suppose that you developed your own new temperature scale, denoted oN. You chose 30.0oN as the temperature of freezing water and 280oN as the temperature of boiling water at 1.0 atm pressure.
The experimentally measured density under the same conditions is 3.10 g/L. Account for the discrepancy between your calculated value and the experimental result.
when 0.198 g of KHP is tritated with NaOH it requires 27.80 mL of NaOH to reach the endpoint of the reaction. Calculate the molarity of the NaOH solution.
What should the mole percent of oxygen be in the diving gas for the partial pressure of oxygen in the mixture to be 0.21 atm, the same as in air at 1 atm
The standard cell potential (Ecell) of the zinc-air battery is 1.65V. If at 25 degrees celcius the partial pressure of oxygen in the iar diffusing through its cathode is 0.22atm, what is the cell potential (Ecell)? Assume the cell reaction is:
If the temperature of a sample of gas with an initial volume of 1.75 is increased form 15.0 c to 30.0c, what will the final volume be.
c5h12, to Co2 and H20 is -3536.3 kJ/mol. What is the enthalpy of formation of pentane at 25 degrees celcuius?
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