Part A: Exothermic and Endothermic Dissolution of Salts Unnamed: 0 NaCl CaCl2 KCl Equation for dissolution of salt NaN NaN NaN Mass of test tube NaN NaN NaN Mass of test tube and water NaN NaN NaN Mass of water NaN NaN NaN Initial temperature of water NaN NaN NaN Mass of test tube NaN NaN NaN Mass of test tube and salt NaN NaN NaN Mass of the salt NaN NaN NaN Final temperature NaN NaN NaN Is this exothermic or endothermic dissolution? NaN NaN NaN Calculate q for the dissolution of the salt NaN NaN NaN Calculate the J/g salt NaN NaN NaN Would this salt be most useful for ice or heat packs? NaN NaN NaN Part B: Calculating the Heat Capacity of a Calorimeter Unnamed: 0 Trial 1 Trial 2 Mass of calorimeter (Coffee cups and lid) NaN NaN Mass of "cold" water NaN NaN Initial temperature of "cold" water NaN NaN Mass of hot water NaN NaN Initial temperature of hot water NaN NaN Final temperature of the system NaN NaN Specific heat of water 4.184 J/g∘C 4.184 J/g∘C q Lost by hot water NaN NaN q Gained by cold water NaN NaN Heat capacity of calorimeter NaN NaN Average heat capacity of calorimeter NaN NaN Trial 1 Trial 1.1 Trial 2 Trial 2.1 Time Temperature Time Temperature 0 NaN 0 NaN 10 NaN 10 NaN 20 NaN 20 NaN 30 NaN 30 NaN 40 NaN 40 NaN 50 NaN 50 NaN 60 NaN 60 NaN 70 NaN 70 NaN Part C: Calculating the Specific Heat of Copper Unnamed: 0 Trial 1 Trial 2 Mass of copper shots used NaN NaN Initial temperature of copper shots/copper wire NaN NaN Final temperature of the system NaN NaN Mass of water in calorimeter NaN NaN Initial temperature of water in calorimeter NaN NaN Specific heat of water 4.184 J/g∘C 4.184 J/g∘C q Gained by water NaN NaN Specific heat of copper (Assuming no heat lost to calorimeter) NaN NaN Average specific heat of copper NaN NaN Specific heat of copper (Using calorimeter specific heat from Part B) NaN NaN Average specific heat of copper NaN NaN If the specific heat of Cu is 0.386 J/g∘C, what is the % error from the above row? NaN NaN Trial 1 Trial 1.1 Trial 2 Trial 2.1 Time Temperature Time Temperature 0 NaN 0 NaN 10 NaN 10 NaN 20 NaN 20 NaN 30 NaN 30 NaN 40 NaN 40 NaN 50 NaN 50 NaN 60 NaN 60 NaN 70 NaN 70 NaN Post-Lab Questions According to your results, what salt in Part A would have been the best choice for use in a heat pack? In a cold pack? Defend your choice. Why is it not possible to reuse a heat pack in term of the chemistry? Compare the specific heat of water to the specific heat of metal in the table provided. Which would heat up faster (with less energy required) Why would metal make a poor ingredient in a heat pack? If there was a delay between measuring the initial temperature of a hot object and its transfer to the calorimeter, how would the heat capacity of the object be affected? How would the calculation of the heat capacity of the calorimeter be affected (too high, too low, or no affect)? If hot water from the test tube in Part C had accidentally dripped into the calorimeter, how would the calculation of the specific heat of the calorimeter be affected (too high, too low, or no affect)?