The Half Life of the Radium Isotope Ra-226 Is Approximately

question 42

Multiple Choice

The half life of the radium isotope Ra-226 is approximately 1,599 years.If the amount left after 1,000 years is 1.8 g, what is the amount after 2000 years? Round your answer to
Three decimal places.

• A)1.167 g
• B)0.939 g
• C)1.800 g
• D)0.490 g
• E)2.334 g

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Definitions:

Big Five

Relates to the five broad personality traits used in psychology: openness, conscientiousness, extraversion, agreeableness, and neuroticism.

Conscientiousness Factor

A personality trait characterized by being thorough, careful, or vigilant; it implies a desire to do a task well.

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The range of skills and abilities that a team possesses in order to perform effectively.

Extraversion

A personality trait characterized by outgoingness, sociability, and a high level of activity.