Which of the Following Soil Additives Would Best Reduce the Concentration

question 42

Multiple Choice

Which of the following soil additives would best reduce the concentration of dissolved Fe³⁺ in ground water?

• A) lime [Ca(OH)₂]
• B) saltpeter [KNO₃]
• C) ferric chloride [FeCl₃]
• D) ammonium nitrate
• E) ammonium sulfate

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Definitions:

High-Low Method

A technique used in cost accounting to estimate variable and fixed costs based on the highest and lowest levels of activity.

Variable Costs

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

Fixed Costs

Expenses that do not change with the level of production or business activity, such as rent or salaries.