The Half-Life of Radioactive Technetium-99 Is 6

question 66

Multiple Choice

The half-life of radioactive Technetium-99 is 6.0 hours.Find the number of ⁹⁹Tc nuclei necessary to produce a sample of activity 1.9 µCi.(1 Ci = 3.7 × 10¹⁰ decays/second)

• A)5.9E-2
• B)2.2E+9
• C)1.5E+9
• D)6.1E+5
• E)​4.2E+5

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Definitions:

Networking

The act of establishing and maintaining professional relationships or connections with others for mutual benefit.

Expert Power

The influence and authority someone holds as a result of their expertise or knowledge in a specific area.

Centrality

In network analysis, centrality measures the importance or influence of a node within a network, determining the most connected or pivotal points.

Substitutability

The ease with which one good, service, or worker can be replaced with another.