In a calorimetry experiment to determine the enthalpy of combustion of ethanol, a 100 g water sample increases in temperature by 20.0°C. What is the heat absorbed by the water? (Specific heat of water = 4.18 J/g•°C)
Correct answer: B. 8360 J
- A. 4180 J
- B. 8360 J
- C. 10450 J
- D. 20900 J
Explanation
Heat q=m × c × ∆T = 100 × 4.18 x 20.0= 8360 J.
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