Phosphorous-32 Is a Beta Emitter with a Half-Life of 14

question 37

Multiple Choice

Phosphorous-32 is a beta emitter with a half-life of 14.3 days. So, after 42 days, a 100-mg sample will have decayed to 25 mg. Which statement best describes where the rest of the ³²P went?

• A) It disappeared.
• B) It reacted with air.
• C) It turned into sulfur and a beta particle.
• D) It turned into silicon and a beta particle.
• E) It decomposed into beta particles.

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Definitions:

Marginal Cost

The additional cost incurred by producing one more unit of a product.

Raise Price

An action taken by a seller to increase the selling price of a product or service, often in response to higher costs or in an attempt to increase profits.

Economic Profit

The difference between total revenue and total costs, including both explicit and implicit costs, representing the excess that remains after a firm has paid all costs.

Pure Monopoly

A market structure where a single company is the sole producer of a particular good or service, facing no competition.