Solve. -The Function a = A0e-0.01155x Models the Amount in Pounds

question 67

Multiple Choice

Solve.
-The function A = A0e-0.01155x models the amount in pounds of a particular radioactive material stored in a concrete vault, where x is the number of years since the material was put into the vault.
If 300 pounds of the material are placed in the vault, how much time will need to pass for only 53
Pounds to remain?

• A) 160 yr
• B) 150 yr
• C) 155 yr
• D) 300 yr

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Definitions:

Reaction

A chemical process in which substances interact to form new products, typically characterized by a change in chemical composition.

Propagation Step

A phase in a chain-reaction mechanism where radicals generate new radicals, allowing the reaction to proceed in a series of subsequent steps.

Free Radical

Highly reactive atoms or molecules with unpaired electrons, involved in many chemical reactions, including those in biological systems.

Chlorination

A chemical reaction that introduces chlorine atoms into a molecule, often used for disinfection or organic synthesis.