Carbon-11 Is Used in Medical Imaging

question 47

Multiple Choice

Carbon-11 is used in medical imaging. The half-life of this radioisotope is 20.4 min. What percentage of a sample remains after 60.0 min?

• A)71.2
• B)5.28
• C)13.0
• D)34.0
• E)2.94

---

Definitions:

Black Women's Identities

The collective and individual self-concepts of African American women, shaped by the intersections of race, gender, and social context.

Erased

Removed or deleted from consideration or memory.

Male-Centred

A perspective or approach that prioritizes male experiences or viewpoints, often overlooking female perspectives.

Objectified

The treatment of a person or a group of people as an object, disregarding their personality or dignity, often leading to dehumanization.