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a) Write out the overall cell reaction occurring in the following voltaic cells. Draw a diagram (with two beakers) showing appropriate metals and solution contents. Write the appropriate half reactions. Label the anode and the cathode and show the direction of electron flow.
Cd(s) | Cd2+(aq) || Ag+(aq) | Ag(s)
An electrochemical cell is composed of a silver electrode in a 0.025 M Ag+ solution and a cadmium electrode into a 0.15 M Cd2+ solution.
b) Write out the spontaneous cell reaction that will occur.
c) Determine Ecell° and Ecell for this electrochemical cell.
d) What is the equilibrium constant for this reaction?
Two solutions, "A" and "B", are labeled "0.21 M CaCl2" and "0.34 M CaCl2", respectively. Both solutions contain the same number of moles of CaCl2. If solution A has a volume of 25 mL, what is the volume of solution B
Why does Mg impart no colour to Bunsen flame while calcium does
Suppose a particular cone cell absorbs light with a wavelength of 572.nm. Calculate the frequency of this light.
dinitrogen monoxide gas and 3.41g of carbon dioxide gas. You can assume both gases behave as ideal gases under these conditions. Calculate the mole fraction of each gas. Be sure each of your answer entries has the correct number of significant digits..
The first ionization energy of lead (Pb) is 716 kJ/mol. If a Pb atom is ionized using a photon of ultraviolet radiation having an energy of 1.987E-18 J, what is the amount of leftover energy that goes into the kinetic energy of the ejected electro..
Calculate the pH of a solution prepared by dissolving .370 mol (HCO2H) and .230 mol (NaCO2H) in H2O sufficent to yeild 1.00L of solution. Ka=1.77x10^-4
In this experiment a hot metal block at 100oC is added to cold water in a calorimeter. The heat lost by the metal block equals the heat gained by the water and the two end up at the same temperature.
The solubility-product constant for Ce(IO3)3 is 3.2e-10. What is the concentration in a solution prepared by mixing 50 mL of O.0250 M Ce with 50 mL of 0.040 M IO3? Back of book has 7.0e-3 M
What is the molality of a solution prepared by dissolving 40.0g of glucose (C6H12O6) in 4.00kg of water?
the addition of anhydrous calcium chloride to the crude product obtained from the separation procedure often results in
2.362 grams of an unknown hydrate are heated until all the water is removed. The anhydride reside weight 2.015 grams. Calculate the percentage of water in this hydrate
Platinum (Pt), with a mass number of 188 and an atomic number of 78, decays by emission of an alpha particle. Identify the product of the nuclear reaction by providing its atomic symbol, mass number
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