An Unknown Metal (M)is Electrolyzed

question 51

Multiple Choice

An unknown metal (M) is electrolyzed.It took 74.1 s for a current of 2.00 amp to plate 0.107 g of the metal from a solution containing M(NO₃) ₃.Identify the metal.

• A)La
• B)Bi
• C)Ga
• D)Cu
• E)Rh

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Definitions:

Sample Mean

The average value of a set of observations taken from a sample.

Population

All the members or elements that are examined as part of a statistical study.

Driver's License Number

A unique numerical or alphanumeric code issued by a governmental authority that identifies a person's official driver's license.

Temperature

A physical quantity that expresses the subjective perceptions of hot and cold.