The black silver sulfide discoloration of silverware can be…
The black silver sulfide discoloration of silverware can be removed by heating the silver article in a sodium carbonate solution in an aluminum pan. a. Write down the two half-reactions for this cell. (4 marks)Anode:Cathode: b. What is the cell potential, E°{“version”:”1.1″,”math”:”E°”}? (2 marks) c. If the standard reduction potential for Al3+ is -1.66 V, calculate the reduction potential for the half-cell reaction (2 marks) Ag2S(s) + 2e- → 2Ag(s) + S2-(aq){“version”:”1.1″,”math”:”Ag2S(s) + 2e- → 2Ag(s) + S2-(aq)”} d. Why is a sodium carbonate solution needed? Would a sodium chloride solution work just as well? (2 marks)
Read DetailsA patient is hospitalized for suicidal ideation after two su…
A patient is hospitalized for suicidal ideation after two suicide attempts. For the first 2 days of hospitalization, the patient eats 15% of meals and stays in her room between groups. By the fourth day, the nurse observes that the patient is more sociable, is eating meals, and has a bright affect. Considering patient’s behavior on the fourth day of hospitalization, which factor should the nurse consider?
Read DetailsIn each case shown, a point charge +q is a distance d from t…
In each case shown, a point charge +q is a distance d from the closest point of an uncharged metal sphere. The sphere in Case B has a larger diameter than the sphere in Case A. Three students are comparing the two cases. Which student is correct?
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