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) \(9.1 \mathrm {~mA}\)

Understand the role and viability of alternative energy sources in the context of depleting traditional fuels.

Comprehend the objectives of natural resource economics towards maximizing net benefits and minimizing externalities.

Analyze the significance of technological advancements in increasing energy efficiency.

Understand the concepts of time-value of money and its application in energy investments.

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Definitions:

Environmental Racism

involves race-based environmental inequity, where minority communities face disproportionate exposure to pollution and environmental hazards compared to more affluent, predominantly white areas.

Current Ratio

A liquidity ratio that measures a company's ability to cover its short-term obligations with its short-term assets.

Earnings Per Share

A company's profit divided by the outstanding shares of its common stock, indicating the company's profitability.

Year 2

Typically refers to the second year of a specific time frame or series, such as a company's second fiscal year.