A 100-G Sample of Octane (C₈H₁₈) Is Burned in a Bomb

question 79

Multiple Choice

A 1.00-g sample of octane (C₈H₁₈) is burned in a bomb calorimeter that has a heat capacity of 5.80 kJ/°C. The temperature of the calorimeter rises from 25.00^oC to 33.20^oC. What is ΔU per mole for the combustion of octane?

• A) -47.6 kJ/mol
• B) -416 kJ/mol
• C) -707 kJ/mol
• D) -5.43 ×10³ kJ/mol
• E) -1.86 ×10⁵ kJ/mol

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