A Reactant R Is Being Consumed in a First-Order Reaction

question 112

Multiple Choice

A reactant R is being consumed in a first-order reaction. What fraction of the initial R is consumed in 4.0 half-lives?

• A) 0.94
• B) 0.88
• C) 0.75
• D) 0.13
• E) 0.063

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Definitions:

Collectibility

The likelihood or ability of an entity to collect on its accounts receivable or outstanding debts.

Account

A record in financial accounting that tracks the financial transactions of a specific asset, liability, equity, revenue, or expense.

Aging

A method used in accounting to categorize the amounts owed by customers based on the length of time an invoice has been outstanding.

Allowance for Doubtful Accounts

A contra-asset account that reduces accounts receivable to reflect the estimated amounts that are expected to be uncollectible.