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Calculate the cell potential for the following reaction as written at 75 °C, given that [Zn2 ] = 0.870 M and [Ni2 ] = 0.0130 M. The standard cell potential for the half reaction of Zn is 0.76 written as Zn (s) --> Zn2+ + 2e- and the standard cell potential for the half reaction of Ni2+ is -0.26 written as Ni2+ + 2e- -->Ni (s). The overall equation for the reaction is Zn (s) + Ni2+ (aq) <----> Zn2+ (aq) + Ni (s)
A patient weighs 165 pounds and is to receive a drug at a dosage of 45.0 mg per kg of body weight. The drug is supplied as a solution that contains 25 mg of drug per mL of solution. How many mL of the drug should the patient receive?
a 25.0 ml sample of river water was titrated with 0.00100 m na2cr2o7 and required11.5 ml to reach the end point. what
The vapor pressure of ethanol at 34.7 degrees Celsius is 100mmgh, and the heat of vaporization of ehanol is 38.6 kj/ mol. What is the vapor pressure of ethanol in mm Hg at 65.0 degree celcius
A reaction has a rate constant of 7.69 M^-1s^-1 at 219 K and a rate constant of 3.36 *10^4 M^-1s^-1 at 344K. what is the activation energy for this reaction
considering the given equation h2c2o4aq 2 oh-aq ltgt c2o42-aq 2 h2ol in which it is given that for h2c2o4aq ka1 6.5
Consider a rigid, adiabatic, impermeable cylinder (i.e., a closed isolated system) that consists of two chambers (i.e., simple systems) that are separated by a wall that is permeable
Describe the type of compound that could have each of the following types of attractive forces: a) dipole-dipole attractions; b) Hydrogen bonding; c) dispersion forces.
A semipermeable membrane separates two solutions. On one side of the membrane the concentration of sodium ions is 0.87 mol/L, and on the other side the concentration of sodium ions is 2.5 mol/L.
Why do solutions of iodide ion in water appear yellow when I- is oxidized to I2 by a suitable oxidizing agent, while solutions of I- in CCl4 or CHCl2 appear violet when the same oxidationis done?
Calculate the [H+], pH, and pOH in each of the following solutions in which the hydroxide ion concentrations are A) 0.0068M B) 6.4 X 10^-5M C) 1.6 X 10^-8M D) 8.2 X 10^-12M
We add excess Na2CrO4 solution to 17.0 mL of a solution of silver nitrate (AgNO3) to form insoluble solid Ag2CrO4. When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.310 grams.
Neglecting any effects caused by volume changes, would you expect the ionic strength to increase, decrease, or stay the same by the addition of NaOH to a dilute solution of
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