An Emerald Gemstone Is an Impure Form of the Mineral

question 63

Multiple Choice

An emerald gemstone is an impure form of the mineral beryl,Be3Al₂Si16O18 (818.43 g/mol) .What is the percentage of aluminum in the mineral?

• A)3.30%
• B)3.37%
• C)6.59%
• D)35.2%
• E)54.9%

---

Definitions:

Incentives

Financial or non-financial rewards offered to encourage specific behaviors or actions among individuals or organizations.

Trade

The exchange of goods or services between parties in return for other goods, services, or money.

Gains From Trade

The benefits that entities receive from the voluntary exchange of goods or services, typically leading to an improvement in overall welfare.

Street Lighting

A service provided, often by local governments, that involves the installation and maintenance of public lighting along streets and in public areas for safety and visibility.