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 to 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 (1 W = 1 J/s).]
Answer to relevant QuestionsReference Table 18.5, and give examples of the three types of alkali metal oxides that form. How do they differ? Table 18.5 Bacterial digestion is an economical method of sewage treatment. The reaction is an intermediate step in the conversion of the nitrogen in organic compounds into nitrate ions. What mass of bacterial tissue is produced in a ...Nitrogen gas reacts with hydrogen gas to form ammonia gas (NH3). Consider the following illustration represent-ing the original reaction mixture (the numbers of each molecule shown are relative numbers): Assume this reaction ...Write electron configurations for each of the following. a. Cr, Cr2+, Cr3+ b. Cu, Cu+, Cu2+ c. V, Y2+, V3+ How would transition metal ions be classified using the Lewis definition of acids and bases? What must a ligand have to bond to a metal? What do we mean when we say that a bond is a “coordinate covalent bond”?
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