Suppose the Half-Life of an Isotope Is 2 Days

question 8

Multiple Choice

Suppose the half-life of an isotope is 2 days.You purchase 10 grams of the isotope,but it was produced in a laboratory 4 days before it was delivered to you.How much of this isotope will you have 3 days after it was delivered to you?

• A)more than 2.5 grams but less than 5 grams
• B)2.5 grams
• C)more than 1.25 grams but less than 2.5 grams
• D)1.25 grams
• E)less than 1.25 grams

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