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When a 21.0 mL sample of a 0.308 M aqueous hypochlorous acid solution is titrated with a 0.388 M aqueous potassium hydroxide solution, what is the pH at the midpoint in the titration?
A particular first-order reaction has a rate constant of 1.35 x10^2 s^-1 at 25 degrees Celsius. What is the magnitude of k at 75.0 degress Celsius if Ea= 85.6 kJ/mol
the content of manganese in steel was found using atomic absorption and the method of standard additions. a standard
Determine the pH of a solution prepared by adding 0.0500 mole of solid ammonium chloride to 100 mL of a 0.150-molar solution of ammonia.
A package of alumnium foil contains 50 ft ^2 of foil, which weighs approximately 8.0 oz. Alumnium has density of 2.70 g/cm ^3. What is the approximate thickness of the foil in mm?
In a fuel cell using oxygen as the oxidizer and hydrogen as the fuel, what is the overall cell reaction?
The specific heat capacity of a certain monatomic solid is 0.392J*k^-1*g^-1. The chloride of this element (XCl2) is 52% chlorine by mass.
What is the pH of a solution made by mixing 30.00 mL of 0.10 M acetic acid with 30.00 mL of 0.10 M KOH. Assume that the volumes of the solutions are additive. Ka = 1.8 × 10-5 for CH3CO2H.
How does concentrated H2SO4 catalyze the esterfication reaction of ethanol and acetic acid to form ethyl acetate. Explain.
Propose the argument that, for any liquid at atmospheric pressure (that is, a liquid that boils above room temperature when the external pressure is 1 atm), the numerical value of delta Hvap in joules per mole is greater than the numerical value o..
The liquid is allowed to stand in contact with the solid until equilibrium is achieved and then the liquid is poured off. What is the mass of solid remaining?
What is the standard free energy of the cell. Is this process spontaneous or non-spontaneous. It makes sense that in order to produce electricity, the plant's redox process should be spontaneous.
a first-order reaction had a rate constant k of 0.0123 1s. if the initial concentration of reactant is 1.25m what
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