325 Mole of a Radioactive Isotope with a Half-Life of 18.2

question 63

Multiple Choice

3.25 mole of a radioactive isotope with a half-life of 18.2 hours sits on a countertop for 2.7 days exactly.How much of the isotope is left?

• A)0.14 mole
• B)0.28 mole
• C)1.34 mole
• D)2.47 mole
• E)3.25 mole

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