A Jeweler Needs to Electroplate Gold, Having an Atomic Mass $196.97 \mathrm {~g} / \mathrm { mol }$

question 35

Multiple Choice

A jeweler needs to electroplate gold, having an atomic mass of $196.97 \mathrm {~g} / \mathrm { mol }$ , onto a bracelet. He knows that the charge carriers in the ionic solution are singly-ionized gold ions, $\mathrm { Au } ^ { + }$ , and has calculated that he must deposit $0.20 \mathrm {~g}$ of gold to reach the necessary thickness. How much current does he need to plate the bracelet in $3.0$ hours? $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } , \mathrm { N } _ { \mathrm { A } } = 6.02 \times 10 ^ { 23 } \right.$ atoms/mol)

• A) \(540 \mathrm {~mA}\)
• B) \(33 \mathrm {~A}\)
• C) \(1800 \mathrm {~mA}\)
• D) \(9.1 \mathrm {~mA}\)

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Definitions:

Ending Inventory

The worth of products ready for purchase at the close of a financial period.

Cost Flow Assumption

The method used by businesses to value inventory and calculate the cost of goods sold, based on the order in which products are bought or produced.

FIFO

"First In, First Out," an inventory valuation method where the oldest stock is sold first.

Tax Purposes

The reasonings or rationalizations related to the computation and payment of taxes, often guiding how financial transactions are structured or reported.