The Half-Life a Particular Isotope of Barium Is 12 S

question 4

Multiple Choice

The half-life a particular isotope of barium is 12 s. What is the activity of a 1.0 × 10^-6 kg sample of this isotope?

• A)1.2 × 10¹⁵ Bq
• B)1.8 × 10¹⁶ Bq
• C)2.5 × 10¹⁷ Bq
• D)3.6 × 10¹⁸ Bq
• E)6.0 × 10²³ Bq

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Definitions:

Cash Dividend

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A form of corporate equity ownership, a type of security that represents ownership of a portion of a company, giving the holder voting rights.

Long-term Debt

Borrowed money that a company or individual must repay over a period longer than one year.

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