Hand in when entering Lab. No admittance without this completed Pre-Lab.

1. What is the purpose of this experiment?___________________________________________ __________________________________________________________________________?
2. What is the chemical equation for the reaction in this experiment?______________________ ___?
3. Define combustion.?
4. Define exothermic?
5. What is molar heat of combustion??
6. What is the purpose of the card??
7. You will be using a pop can for a calorimeter, how will you support it??
8. What is the formula for calculating the heat of combustion??
9. If we use ice water to start with, and room temperature is 22°c, to what temperature will we heat the water??
10. If we raised the temperature of 100mL of water by 32°c, how many joules of energy were added to the water??
11. If the candle and card had a pre-burn mass of 15.27g and a post-burn mass of 14.89g, how much paraffin was converted to products??
12. Using the answers from #10 & 11 determine a heat of combustion for paraffin.?
13. If a mistake was made in measuring the water in #10 and you found you only had 96mL of water, would the heat of combustion calculated in #12 be too high or too low??
14. If a drop of melted wax had been lost, would the calculated heat of combustion be too high or too low??

Questioins? Comments??
Ted Richardson, Toledo Technology Academy