The Isotope Has a Half-Life of 5,715 Years

question 6

Multiple Choice

The isotope has a half-life of 5,715 years. Given an initial amount of 11 grams of the isotope, how many grams will remain after 500 years? After 5,000 years? Round your answers to four decimal places.

• A) 7.2469 gm, 4.1988 gm
• B) 6.2117 gm, 3.5989 gm
• C) 10.3528 gm, 5.9982 gm
• D) 4.1411 gm, 2.3993 gm
• E) 12.4233 gm, 7.1979 gm

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Definitions:

Healthy Personality

A state of mental well-being where an individual realizes their own abilities, can cope with normal stresses of life, work productively, and is able to make contributions to their community.

Carl Rogers

A pioneering humanistic psychologist known for his theory of personality and his method of client-centered therapy.

Reality Principle

A psychoanalytic concept suggesting that the ego seeks to satisfy the id’s desires in realistic and socially appropriate ways, taking into account the external world.

Pleasure Principle

In psychoanalytic theory, the instinctual seeking of pleasure and avoidance of pain to satisfy biological and psychological needs.