A Sample of a Radioactive Isotope Is Found to Have

question 23

Multiple Choice

A sample of a radioactive isotope is found to have lost 19.8% of its original activity after 8.59 days.What is the decay constant of this isotope?

• A)0.026 d−1
• B)0.188 d−1
• C)1.89 d−1
• D)0.021 d−1
• E)0.51 d−1

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Definitions:

Consolidation

The act of combining multiple entities, assets, or processes into a single, more effective and efficient unit.

Short-form Merger

A method of merger where a parent company merges with a subsidiary and doesn't require approval from the subsidiary's shareholders.

Parent Corporation

A company that owns enough voting stock in another firm to control management and operations by influencing or electing its board of directors.

Subsidiary's Stock

Shares of ownership in a company which is controlled by another firm, where the controlling firm owns more than 50% of the subsidiary's stock.