1. Reaction Car Sunny Ovesen, Kara Walton, Rachel Chan

2. Reaction Chemistry We decided to create a maximum of 5atms with chemical reactions from HCL, baking soda and water. From our calculations we decided to do 12mL of HCL, 12.23g of NaHCO 3 (baking soda), and 10mL of water.

3. Reaction Chemistry Calculations Cont. -Calculations NaHCO3 + HCl ---> CO2 + NaCl + H2O n=(PV)/(RT)  P=5atm  V=700mL=0.7L  R=0.08205 (L*atm)/(mol-K)  T=293K n=( 5atm*0.7K) / (0.08205 (K*atm)/(mol-K)*(293K)) n=0.1455867458

4. Reaction Chemistry Calculations Cont #2 HCL Baking Soda Atm Calc 0.1455867458 moles HCl1 L Hcl1000mL=12.0320 mL HCl 112.1 moles HCl1L 0.1455867458 moles HCl84.008g NaHCO 3 = 12.2305g NaHCO 3 11 mole NaHCO 3 12.0320 mL HCl=2.4064 mL HCl /atm 5 atm 12.2305g NaHCO 3 =2.4461g NaHCO 3 /atm 5 atm

5. Car design

6. Testing Results DateTrialLength(ft) 25-Nov115 2 310 415 1-Dec515 620 715 820 915 1015 1122 1325 1425 15 3-Dec1610 175 1810 1915 20 2122 15 ave:16.14286

7. Conclusion During testing, the car went an average of ____. However our results weren't consistent due to K'Nexs falling off or moving, to produce an off-kilter car that caused unwanted friction. When the car ran more smoothly we had checked the K'Nexs stability and structure. Re-design ideas that went on during our experiment was the realignment of our wheels because our first trials barely moved the car. Another major redesign that happened was the testing of multiple caps because major malfunctions occurred when gas was released. We tested over 10 Propel caps to finally find a suitable match for our bottle. After these refinements our car moved farther. If we were to complete more runs we would rebuild part of the car so that the bottle was held in place when we turned the cap ensuring all the released gas was utilized.