Pre-lab Questions For problems that require equations and calculations, please show your work 1. What is the unit of heat convenient for work with water in this experiment? (Hint: it's not J] I calorio = 4.184 JOuRs 2. Read the procedure and think about the practical side of this lab exercise: Why is it helpful to heat the tubes of water and the tubes with the metal as the water heats rather than wait until the water is boiling to put these in? This provides more even heating substances. 3. What is the enthalpy(heat) change in calories for 32.00 grams of water at 21.6C when the temperature of the water changes to 34.6C? Q:m Cp AT Q: 32(4.184)3)= 1740,5J I ca = 4.18104J Q=416cal Mass 22.009 m AT: 34.6-21.6 130 enthainy (hear) =416 cal 4. Assume that the water was in a container that is known to gain just 1 cal/C, its "Ccal", how much heat did the container gain assuming it also was initially 21.5C and rose to 34.4C? 5. Summing the heat gained in #3and #4, what is the total heat gained? 6. Assuming that the heat absorbed by the water and its container, summed in #5 was due to heat release by 50.000 g of metal that was initially at 100C and cooled to 34.6C, calculate the calories per gram-C for the metal, that is its specific heat in cal/gC.