A Radioactive Isotope Has a Lifetime of 6

question 57

Multiple Choice

A radioactive isotope has a lifetime of 6.30 min.If you begin with a sample of 2.50 moles of this isotope,how many atoms have you left after one hour?

• A)1.10 * 10²⁰
• B)4.5 * 10¹⁴
• C)2.05 * 10²¹
• D)None are correct.

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Definitions:

Foot-In-The-Door Technique

A persuasive strategy that involves getting a person to agree to a small request as a means of eventually getting them to comply with a larger request.

Persuasion Technique

Strategies or methods employed to influence others' beliefs, attitudes, or behaviors towards a particular idea, object, or action.

Social Sciences

The multidisciplinary study of human society and relationships among individuals within it.

Lobbying Group

An organization that seeks to influence public policy and decision-making processes within political, economic, and social systems.