Radioactive Decay: a Certain Substance Has a Half-Life of 5

question 67

Multiple Choice

Radioactive decay: A certain substance has a half-life of 5.0 hours. How many nuclei of the substance are required to give an initial activity of 6.0 μCi? 1 Ci = 3.7 × Bq.

• A) 5.8 ×
• B) 8.5 ×
• C) 6.3 ×
• D) 3.2 ×
• E) 2.4 ×

---

Definitions:

Frustration

The feeling of upset or annoyance, often due to inability to change or achieve something.

Income

Refers to the money an individual or business receives in exchange for providing a good or service or through investing capital.

Capital Intensive

Describes industries or businesses that require a large amount of capital investment in relation to their labor cost to produce goods and services.

Four Seasons Hotel

A luxury hotel chain known for its high-quality service and accommodations, catering to guests with upscale amenities.