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A concentration cell is built based on the following half reaction by using two pieces of iron as electrodes (each weighing 100.0 g), two Fe3+ solutions, 0.149 M and 0.431 M (both exactly 1.00 L in volume), and all other materials needed for a galvanic cell. What will the mass of the anode electrode be when the cell potential is 0.004951 V at 289 K?Fe3+ + 3 e- ? Fe Eo = -0.036 V
determine the empirical formula of a dead alkaline battery if ofund to contain a compound of Mn and O. Its analysis gives 69.6% Mn and 34.4% O
A student performs an extraction using water and methylene chloride. Which is the top layer and which is
If you wanted to prepare a solution of CO in water at 25 degrees celsius in which the CO concentration was 2.2 mM, what pressure of CO would
Identify the intermolecular attractions for dimethyl ether and for ethyl alcohol. Which molecule is expected to be more soluble in water?
Stishovite is a high pressure form of SiO2 found in meteorite craters. While normal SiO2 has the quartz structure, in which each Si is coordinated by four O atoms
How many kilocal are required to increase the temperature of 15.6 g of iron from 122 °C to 355°C? The specific heat of iron is 0.450 J/g °C.
For each of the following slightly soluble salts, write the equilibrium equation for dissociation and the solubility product expression: a)CuS b)Ag2SO4 c)Zn(OH)2
octane has a density of 0.692g/ml at 20C. How many grams of O2 are required to burn 30.5 gal of C8H18
What is the internal energy change for the system if 969 joules of heat flows into the system from the surroundings and 253 joules of work is done by the system on the surroundings
the maximum velocity of the ejected electrons is 3.45 multiplied by 105 m/s. Calculate the binding energy of electrons to the magnesium surface.
According to the following reaction, how many grams of bromine will be formed upon the complete reaction of 24.6 grams of bromine trifluoride? bromine trifluoride (g) bromine (g) + fluorine (g)
A metal-plating waste contains 20mg/L Cu2+, and it is desired to add Ca(OH)2 to precipitate all but 0.5mg/L of the copper. To what concentration in moles per liter must the hydroxide concentration be raised to accomplish this? Ans: 1.6*10^-7 mol/L
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