​What Percent of a Present Amount of Radioactive Radium

question 75

Multiple Choice

​What percent of a present amount of radioactive radium will remain after 900 years? The half-life of radium is 1,600 years. ​

• A) ​45%
• B) ​25%
• C) ​65%
• D) ​68%

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Definitions:

Manufacturer

An entity or company that produces goods from raw materials through the use of various processes, machinery, and operations.

Seed Packets

Packages containing a specific number of seeds for planting.

Expected Value

The weighted average of all possible values of a random variable, taking into account their probabilities of occurrence.

Independent

Not influenced or controlled by others in terms of opinions or actions; in statistics, variables not affected by any other variables.