A Certain Isotope Has a Specific Activity of 7 $\alpha$ Particles Will a 75

question 61

Multiple Choice

A certain isotope has a specific activity of 7.29 * 10¯⁴ Ci/g. How many $\alpha$ particles will a 75.0 mg sample emit in one hour?

• A) 9.99 *10⁴
• B) 2.02 * 10⁶
• C) 7.28 * 10⁹
• D) 1.29* 10¹²
• E) None of these choices is correct.

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Definitions:

Intrinsic Motivation

The drive to engage in activities for their own sake, due to the inherent satisfaction or fulfillment derived from the activity itself, rather than for some external reward.

Extrinsic Motivation

Motivation driven by external rewards such as money, fame, grades, or praise rather than by intrinsic factors like personal satisfaction or enjoyment of the task itself.

Activity Directed

Focused or oriented towards specific actions or tasks.

Human Growth

The physical, psychological, and emotional development of humans from birth to the end of life.