What Is the Half-Life of a Radioactive Substance If 3

question 94

Multiple Choice

What is the half-life of a radioactive substance if 3.4 g decays to 0.80 g in 75 hours? Round to the nearest tenth of an hour.

• A)35.9 hours
• B)26.9 hours
• C)18.0 hours
• D)9.0 hours
• E)56.5 hours

---

Definitions:

Physical Design

The aspect of design that deals with the tangible elements of a product or structure, focusing on aesthetics, functionality, and usability.

Crime Occurrence

Refers to the incidence or rate at which criminal acts happen in a specified area or population.

External Reality

The objective world or environment that exists independently of an individual's perceptions or beliefs.

Social Support

Assistance and encouragement provided by others, including emotional, informational, and material support, contributing to an individual's well-being.