A Radioactive Sample Has a Half-Life of 10 Min

question 65

Multiple Choice

A radioactive sample has a half-life of 10 min.What fraction of the sample is left after 40 min?

• A) 1/2
• B) 1/4
• C) 1/8
• D) 1/16
• E) 1/32

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Definitions:

Inversely Proportional

A relationship between two variables where one increases as the other decreases.

Pressure of Gas

The force that the gas exerts on the walls of its container; it depends on the volume, temperature, and number of gas molecules.

Volume of Container

The amount of space that a container can hold, usually measured in liters or cubic meters.

Blood CO2 Levels

The concentration of carbon dioxide in the blood, an important indicator of respiratory function.