How Much Energy (KJ) Is Released If 10 $\rarr$ Al₂O₃(s) + 2Fe(l)

question 46

Multiple Choice

How much energy (kJ) is released if 10.0g of Al(s) is reacted with excess Fe₂O₃(s) in the thermite reaction
2Al(s) + Fe₂O₃(s) $\rarr$ Al₂O₃(s) + 2Fe(l) $\Delta$ H ^$\circ$ = - 822.8 kJ/mol

• A) 8,230 kJ
• B) 823 kJ
• C) 305 kJ
• D) 152 kJ
• E) 4,110 kJ

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Definitions:

NPV

Net Present Value, a calculation used to determine the present value of a series of future cash flows minus the initial investment, utilized in capital budgeting to assess the profitability of an investment.

Least-Cost Decision

A decision-making process focused on selecting the option that requires the lowest financial outlay while still achieving the desired result.

Economic Profit-Maximising

The strategy of adjusting the output and pricing of goods or services to achieve the highest possible profit, taking both explicit and implicit costs into account.

Total Revenue

The entire amount of income generated by the sale of goods or services before any expenses are subtracted.