The Half-Life of 32 Grams of a Radioactive Substance Is

question 1

Multiple Choice

The half-life of 32 grams of a radioactive substance is 6.5 hours. How many grams of the substance remain after 19.5 hours?

• A)16 grams
• B)8 grams
• C)4 grams
• D)2 grams
• E)32 grams

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