Magnesium Carbonate, MgCO₃, Is Insoluble

question 50

Multiple Choice

Magnesium carbonate, MgCO₃, is insoluble. Identify the spectator ions when aqueous solutions of sodium carbonate and magnesium chloride are combined.

• A) Mg²⁺ and CO₃^2-
• B) Na⁺ and Cl^-
• C) Mg²⁺ and Cl^-
• D) Na⁺ and CO₃^2-
• E) None of these choices are correct.

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Definitions:

Cash Payback Period

The time frame it takes for an investment to generate an amount of cash flow to recover its initial cost.

Straight-Line Depreciation

A method of calculating the depreciation of an asset where the cost is evenly allocated over its useful life.

Useful Life

The estimated period over which an asset is expected to be usable by the entity, affecting its depreciation calculations.

Average Rate of Return

This refers to the percentage of average annual profit compared to the initial investment cost, commonly used to evaluate the profitability of an investment.