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

question 27

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

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Definitions:

Erythema Toxicum Neonatorum

A common harmless skin rash affecting newborns, characterized by red blotches with a white or yellow center, appearing within the first week of life.

Benign

Referring to a condition, tumor, or growth that is not cancerous and does not spread to other parts of the body.

Transient

Something temporary or not lasting; often used in medical contexts to describe conditions that are not permanent.

Strawberry Hemangioma

A benign vascular tumor often appearing as a red birthmark on infants, usually fading or shrinking over time.