A Sample of CO₂ Has a Mass of 50

question 26

Multiple Choice

A sample of CO₂ has a mass of 50.0 grams. What is number of molecules of carbon dioxide in the sample? (C = 12.0 u, O = 16.0 u, and 1 u = 1.66 × 10⁻²⁷ kg.)

• A) 4.02 × 10²³
• B) 4.95 × 10²³
• C) 5.66 × 10²³
• D) 6.02 × 10²³
• E) 6.85 × 10²³

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Definitions:

Standard Cost

A predetermined cost of manufacturing, selling, or any other business activity, used as a benchmark for measuring performance.

Labor Rate Variance

The difference between the actual labor cost incurred and the labor cost that was expected or budgeted, typically due to wage rate differences.

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