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:

Marijuana

A psychoactive drug from the Cannabis plant used primarily for medical or recreational purposes.

THC

Tetrahydrocannabinol, the principal psychoactive constituent of cannabis which affects the brain to induce a "high."

Neurons

Cells within the nervous system that transmit information to other nerve cells, muscle, or gland cells.

Hallucinogens

A class of psychoactive substances that cause changes in perception, mood, consciousness, and thought patterns, often resulting in visual or auditory hallucinations.