Determine the Heat Given Off to the Surroundings When 9 $\rarr$

question 33

Multiple Choice

Determine the heat given off to the surroundings when 9.0 g of aluminum reacts according to the equation 2Al + Fe₂O₃ $\rarr$ Al₂O₃ + 2Fe, $\Delta$ H°_rxn= -849 kJ/mol.

• A)7.6 * 10³ kJ
• B)2.8 * 10² kJ
• C)1.4 * 10² kJ
• D)5.6 * 10² kJ
• E)2.5 * 10³ kJ

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Definitions:

Expected Return

The weighted average of all possible returns for a given investment, with weights being the probabilities of each outcome.

Risk-Free Rate

The hypothetical return rate on an investment that carries no risk of losing money, commonly illustrated by the interest rate on government securities.

Multifactor Model

A financial model that employs multiple factors in its calculations to explain market phenomena and/or equilibrium asset prices.