The Concentration of Carbon Monoxide in a Sample of Air

question 82

Multiple Choice

The concentration of carbon monoxide in a sample of air is 9.2 ppm.There are ________ molecules of CO in 1.00 L of this air at 755 torr and 23°C.

• A)3.8 × 10^-7
• B)2.2 × 10²¹
• C)2.9 × 10¹⁸
• D)1.7 × 10²⁰
• E)2.3 × 10¹⁷

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Definitions:

Allocate Prepaid Insurance

involves distributing the cost of insurance premiums over the period that the insurance coverage relates to, recognizing it as an expense over time rather than all at once.

Accrue Salaries Payable

Accrue Salaries Payable involves recording the salaries earned by employees that have not yet been paid, recognizing the liability before the cash is disbursed.

Closing Entry

Journal entries made at the end of an accounting period to transfer temporary account balances to permanent accounts, thus preparing the books for the next period.