The Half-Life of Neptunium-231 Is 50

question 57

Multiple Choice

The half-life of neptunium-231 is 50.0 min.How many minutes will it take for 5.0 g of this isotope to decay to 0.16 g?

• A) × 10² min
• B) × 10² min
• C)1.50 × 10² min
• D)4.00 × 10² min
• E) × 10² min

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