Use the Law of Radioactive Decay to Determine the Activity $\mu$

question 81

Multiple Choice

Use the law of radioactive decay to determine the activity of a 2.0- $\mu$ g sample of Tc-99, t_½ = 2.2 * 10⁵ y.

• A) 1.0 Ci
• B) 1.0 * 10^-6 Ci
• C) 1.5 Ci
• D) 3.3 *10^-8 Ci
• E) 3.3 * 10^-2 Ci

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Definitions:

Skin

The body's largest organ, serving as a protective barrier between the inside of the body and the external environment.

Immunoglobulin

Proteins in the blood plasma, also known as antibodies, which are crucial for the immune system's response against pathogens.

B Cells

A type of white blood cell that plays a crucial role in the immune system by producing antibodies to fight infections.

IgD

Immunoglobulin D, a type of antibody that has a role in the immune system, particularly in the initiation of immune responses.