The Half-Life of ¹³⁴Ba Is 28

question 69

Multiple Choice

The half-life of ¹³⁴Ba is 28.7 hours.How much of a 18.2 g sample of ¹³⁴Ba will be left after 24.00 hours? Round to the nearest hundredth of a gram.

• A) 20.39 g
• B) 7.65 g
• C) 10.19 g
• D) 32.49 g
• E) 14.15 g

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Definitions:

Processing

In psychology, refers to the operations carried out by the brain to interpret and organize sensory information into meaningful patterns.

Additive

A substance added to something in small quantities to improve or preserve it. In another context, it refers to a process or principle involving the addition of elements or quantities.

Subtractive

A process or method that involves removing elements or aspects to simplify or reduce complexity.

Opponent Processes

A theory initially applied to color vision, suggesting that the perception of color is controlled by the activity of two opposing processes.