After Chemical Analysis, a Radioactive Sample Is Found to Contain

question 46

Multiple Choice

After chemical analysis, a radioactive sample is found to contain 2 g of uranium to every 5 g of thorium, its daughter isotope. If the half-life of uranium is 68.9 y, approximately how old is the sample?

• A) 70.0 y
• B) 83.7 y
• C) 111 y
• D) 165 y
• E) 125 y

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Solvent Partner

A partner in a business who has the ability to pay all their debts.

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A situation where liabilities exceed assets in accounting, indicating a negative balance.

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A formal record of the financial activities and position of a business, individual, or other entity over a period.