Gold (Atomic Mass = 197

question 104

Multiple Choice

Gold (atomic mass = 197.0) is plated from a solution of chloroauric acid,HAuCl₄;it deposits on the cathode.Calculate the time it takes to deposit 0.30 gram of gold,passing a current of 0.10 amperes.(1 faraday = 96,485 coulombs)

• A)12 hours
• B)1.2 hours
• C)24 minutes
• D)8.2 minutes
• E)none of these

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Definitions:

Lower Prices

A pricing strategy adopted by businesses to attract more customers by offering goods or services at reduced costs compared to competitors.

Group Purchasing

The aggregation of purchasing orders from many buyers so that a volume discount can be obtained.

Aggregate Demand

The total demand for all goods and services within an economy at a given overall price level and in a given time period.

Lower Prices

A strategy or condition where the cost of goods or services is reduced to attract customers or gain a competitive edge in the market.