The Half-Life of Carbon-11 Is 20

question 82

Multiple Choice

The half-life of carbon-11 is 20.3 minutes.How much of a 100.0 mg sample remains after 1.50 hours?

• A)8.48 mg
• B)4.63 mg
• C)12.9 mg
• D)22.6 mg
• E)7.70 mg

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Definitions:

Periodic inventory system

A periodic inventory system is a method of inventory valuation where the inventory is updated and cost of goods sold is calculated at the end of a specific accounting period.

Ending inventory

The total value of all the goods still available for sale at the end of an accounting period.

Gross profit

The financial metric indicating the difference between revenue and the cost of goods sold, reflecting the core profitability of product sales.

Perpetual inventory system

An accounting method that records the sale or purchase of inventory immediately through computerized point-of-sale systems and enterprise asset management software.