The Most Common Isotope of Oxygen Has an Atomic Mass

question 45

Multiple Choice

The most common isotope of oxygen has an atomic mass of 16 (¹⁶O) . An isotope with an atomic mass of 18 (¹⁸O) is also stable. How many valence electrons are present in ¹⁸O?

• A)fewer than in ¹⁶O
• B)more than in ¹⁶O
• C)the same as in ¹⁶O
• D)None of the other answer options is correct.

Calculate and interpret the margin of safety in both dollar and percentage terms.

Understand the concept of operating leverage and its effect on profitability.

Analyze the effects of fixed and variable costs on a company's financial performance.

Determine the effects of pricing and marketing decisions on a company's profitability.

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Definitions:

Fixed Cost

Expenses that do not change with the level of production or output within a certain range or period.

Variable Cost

Costs that vary directly with the level of production or output, such as materials and labor.

Operating

The day-to-day activities or functions necessary for a business or organization to run effectively and efficiently.

Competitive Market

A market structure characterized by many buyers and sellers, free entry and exit, and a product for which there are many substitutes.