Fe₂O₃(s) and Powdered Aluminum Can React with Great Output of Heat

question 34

Multiple Choice

Fe₂O₃(s) and powdered aluminum can react with great output of heat to form molten iron and Al₂O₃. When this reaction equation is balanced, what are the stoichiometric coefficients in the following order: Fe₂O₃, Al, Fe, Al₂O₃?

• A)1, 1, 1, 1
• B)2, 2, 2, 2
• C)1, 2, 2, 1
• D)2, 1, 1, 2
• E)1, 1, 2, 2

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Definitions:

Residual Value

The estimated value that an asset will have at the end of its useful life, also known as salvage value.

Net Book Value

The value of an asset as recorded on the balance sheet, calculated as the original cost minus accumulated depreciation and impairments.

Straight-Line Depreciation

A method of allocating the cost of a tangible asset over its useful life in an equal annual amount.

Depreciable Cost

The cost of a fixed asset minus its salvage value, which is the total amount that can be depreciated over its useful life.