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CRS Question, 6–14
ANSWER
Choice 4 shows both the proper sign for this
endothermic process and the proper value. The constant 4.184 J/°C g was used to determine
the heat absorbed from the 100.0 mL of water as it’s temperature
dropped by 6.0°C, during dissolving.
Once this was known for 8.0 grams, a ratio to 80.0
grams was calculated.
Section
6.2: Enthalpy and Calorimetry