The Half-Life of Co-57 Is 271

question 4

Multiple Choice

The half-life of Co-57 is 271.8 days;calculate the decay constant.

• A)11.2 * 10^-8 s^-1
• B)16.0 * 10^-4 s^-1
• C)2.95 * 10⁸ s^-1
• D)3.0 * 10^-8 s^-1
• E)6.3 * 10⁶ s^-1

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