A researcher studying the nutritional value of a new candy places a 3.50-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.23 °C. If the heat capacity of the calorimeter is 31.30 kJ·K–1, how many nutritional Calories are there per gram of the candy?
1 answer
q = Ccal x delta T gives you kJ/3.5 g. Convert to kJ/g. Then remember there are 4.184 kcal/kJ. I have an answer of approx 5 kcal but that's just a close estimate.
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