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Problem- A galvanic (voltaic) cell consists of an electrode composed of chromium in a 1.0 M chromium(III) ion solution and another electrode composed of copper in a 1.0 M copper(II) ion solution, connected by a salt bridge. Calculate the standard potential for this cell at 25 °C.
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Use the given molar solubilities in pure water to calculate Ksp for the given compound. Pd(SCN)2; molar solubility = 2.22 10-8 M
Presume you desire to prepare an acetic buffer at pH = 3.95 by adding 0.200 M KOH to 200.00mL of 0.300 M acetic acid CH3COOH. Explain how much volume of the base do you need in order to prepare such a buffer solution
given the following bond enthalpy values calculate the enthalpy of formation for gas phase isopropanol c3h7oh at 25
If 19.4 grams of an aqueous solution of sodium bromide, NaBr, contains 1.69 grams of sodium bromide, what is the percentage by mass of sodium bromide in the solution
Molybdenum crystallizes in a body-centered cubic array of atoms. The edge of the unit cell is 0.314 nm long. Calculate the density of this metal.
1) the initial pH is 11.9 2)the volume of added acid required to reach the equivalence point is 30.3 3)the pH at 5.0 mL of added acid is 11.35 4) the pH at the equivalence point. 5) the pH after adding 6.0 mL of acid beyond the equivalence point
when food inside the pressure cooker boils steam is produced. using the particle theory of matter please explain i why
To convert from the volume by percent of a gas to the mole fraction of a gas (i.e. problem 35 from chapter 9), why is it that all you have to do is divide the volume percent by 100%
laser light scattering on a dilute solution of lysozyme is carried out. The light intensity autocorrelation function decays exponentially with lifetime τC= 16.1 *10^-3 sec. An argon ion laser is used at wavelength of 488 nm and the scattering angl..
A tank having a volume of 1000 ft3 contains 22 lb of CO2, 46 lb of O2 and 154 lb of N2. What pressure will be indicated by a pressure gage attached to the tank if the gas is at ambient temperature (80°F)
If 157 of wet is collected over water at 24 degrees C and a barometric pressure of 737 Torr , how many grams of Zn have been consumed? (The vapor pressure of water is 22.38 Torr)
How far will the protein travel in one hour in an electrophoresis gel at 25C when a field of 1.0 V cm^-1 is applied if the viscosity of the gel is 0.891 cP
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