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In one episode of the 1960s television sitcom, Gilligan's Island, the famous professor constructed voltaic cells to use as substitues for their radio's dead batteries. A single D-cell has an emf of 1.5 V. Which scraps of metal from their damaged boat, the Minnow, could best be used to create a 1.5 V voltaic cell? Assume that coconuts make great beakers and that seawater is a terrific electrolyte.
Metal/Metal Ion E^ored
iron/iron(II) -0.44
lead/lead(II) -0.126
silver/silver(I) -0.799
aluminum/aluminum(III) -1.677
a. iron anode and aluminum cathode
b. silver anode and lead cathode
c. aluminum anode and silver cathode
d. aluminum anode and lead cathode
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In one experiment, the mass of water is 93.0 grams, the initial temperature of the water is 67.2oC, the mass of liquid nitrogen added to the water is 57.8 grams, and the final temperature of the water, after the liquid nitrogen has vaporized, is 3..
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