Tetraphosphorus Hexaoxide ( = 219

question 27

Multiple Choice

Tetraphosphorus hexaoxide ( = 219.9 g/mol) is formed by the reaction of phosphorus with oxygen gas. P₄(s) + 3O₂(g)  P₄O₆(s)
If a mixture of 75.3 g of phosphorus and 38.7 g of oxygen produce 43.3 g of P₄O₆, what is the percent yield for the reaction?

• A) 57.5%
• B) 48.8%
• C) 38.0%
• D) 32.4%
• E) 16.3%

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Definitions:

Contribution Margin Ratio

This ratio measures how much of a company's revenues will contribute to covering its fixed costs and generating profit, after variable costs have been paid.

Operating Income

Profit generated from normal business operations, calculated as sales minus cost of goods sold and operating expenses.

Fixed Costs

Expenses that do not change in proportion to the activity of a business, such as rent or salaries.

Unit Contribution Margin

The difference between the selling price per unit and the variable cost per unit, used to determine how sales affect profitability.