Strontium-90 Is a Byproduct in Nuclear Reactors Fueled by the Radioisotope

question 156

Multiple Choice

Strontium-90 is a byproduct in nuclear reactors fueled by the radioisotope uranium-235. The half-life of strontium-90 is 28.8 yr. What percentage of a strontium-90 sample remains after 75.0 yr?

• A)68.1
• B)16.5
• C)7.40
• D)38.4
• E)2.60

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Definitions:

Elasticity of Demand

An indicator of the responsiveness of the quantity of a good demanded to its price alterations, showing how sensitive buyers are to changes in its cost.

Tax Burden

The total amount of taxes paid by individuals or businesses relative to their income, often discussed in the context of debates over fairness and economic policy.

Elastic

Describes a situation in which the demand or supply for a good or service changes significantly when its price changes.

Inelastic

A situation in which the demand or supply for a product does not change significantly in response to price changes.