A researcher studying the nutritional value of a new candy places a 6.20-gram sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.52 °C. If the heat capacity of the calorimeter is 38.90 kJ·K–1, how many nutritional Calories are there per gram of the candy?

Question

anonymous · Answer

this problem is really hard :O i got like 5 wrongs already :(

anonymous · Answer

thanks for trying :)

anonymous · Answer

hey @zbay :D

anonymous · Answer

$$q=(38.90 \frac{kj}{k})(275.67 k)$$ We notice that our kalvin cancel out leaving the answer Kj. We need to use the conversion factor to get from Kj to Cal and then divide by the mass of the candy.

anonymous · Answer

2562.99 Cal then divide by 6.20

anonymous · Answer

yes that should get your the energy per gram of candy

anonymous · Answer

thank you