Tritium, a Radioactive Isotope of Hydrogen, Has a Half-Life of 12.4

question 19

Multiple Choice

Tritium, a radioactive isotope of hydrogen, has a half-life of 12.4 years. Of an initial sample of 60 grams, how much will remain after 81 years?

• A)2.8307 grams
• B)0.6483 grams
• C)15.0000 grams
• D)53.9595 grams
• E)0.0000 grams

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Definitions:

Debt-To-Equity Ratio

A financial proportion depicting how much of a company's assets are financed through debt versus equity from shareholders.

Balance Sheet

a financial statement that provides a snapshot of a company's financial position at a particular point in time, detailing assets, liabilities, and equity.

Income Statement

A report detailing income and outgoings of a business for a set time frame, culminating in a profit or deficit.

Times Interest Earned

A financial ratio that measures a company's ability to meet its interest payments on outstanding debt from its operating earnings.