It takes 15 kWh (kilowatt hours) of electrical energy to produce 1.0 kg of aluminum metal from aluminum oxide by the Hall–Heroult process. Compare this value with the amount of energy necessary to melt 1.0 kg of aluminum metal. Why is it economically feasible to recycle aluminum cans? (The enthalpy of fusion for aluminum metal is 10.7 kJ/ mol and 1 watt = 1 J/ s.)
Answer to relevant QuestionsSketch the galvanic cells based on the following half-reactions. Calculate ϐo, show the direction of electron flow and the direction of ion migration through the salt bridge, identify the cathode and anode, and give the ...A fuel cell designed to react grain alcohol with oxygen has the following net reaction: C2H5OH(l) + 3O2(g) → 2CO2(g) + 3H2O(l) The maximum work 1 mole of alcohol can yield by this process is 1320 kJ. What is the ...In 1973 the wreckage of the Civil War ironclad USS Monitor was discovered near Cape Hatteras, North Carolina. [The Monitor and the CSS Virginia (formerly the USS Merrimack) fought the first battle between iron-armored ...A zinc–copper battery is constructed as follows: Zn | Zn2+(0.10 M) | | Cu2+(2.50 M) | Cu The mass of each electrode is 200 g. a. Calculate the cell potential when this battery is first connected. This exercise requires student groups to discuss the advantages and disadvantages of using practical and ideal standards and how their use affects employee motivation.
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