The Half-Life of Radium-226 Is 1620 Years

question 17

Multiple Choice

The half-life of radium-226 is 1620 years. How much of an initial 2-g sample remains after 500 years? Please round the answer to two decimal places.

• A) 0.81 grams
• B) 1.54 grams
• C) 1.61 grams
• D) 1.63 grams
• E) 1.65 grams

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Definitions:

Robinson-Patman Act

A U.S. law aimed at preventing anticompetitive practices by producers, specifically prohibiting price discrimination that lessens competition.

Price Discrimination

A pricing strategy where identical or substantially similar goods or services are sold at different prices to different buyers, without a justification based on cost differences.

Noerr-Pennington Doctrine

a legal principle protecting the right to petition the government from liability in antitrust actions.

Clayton Act

A U.S. antitrust law, enacted in 1914, which aims to promote competition and prevent monopolies by prohibiting certain anti-competitive practices.