Graded Assignment Part 2 1. Answer the questions below. Unless otherwise instructed, you may use a scientific calculator and refer to the periodic table in the Chemistry: Problems and Solutions book for this test. When you have finished, submit this assignment to your teacher by the due date for full credit. SHOW ALL WORK IN YOUR CALCULATIONS FOR FULL CREDIT. (6 points) A chemistry student is asked to identify a metal. He finds that 12-gram sample gains 26.0 joules of heat when it is heated from 100° C to 105.54º C. Perform calculations and consult the chart below to identify the metal. Score Click or tap here to enter text. Substance C (J/g-°C) Water (ice) 2.05 Iron 0.46 Aluminum 0.90 Gold 0.13 Copper 0.39 (7 points) 2. Study the image below and discuss what it represents and how the law of conservation of energy applies. Score Click or tap here to enter H reactants ΔΗ products text. Page 1 of 4 8 points) 3. For the following reaction, the enthalpy change is +44.6 KJ/mol. NHCl(s) = NH3(g) + HCl(g) Score Click or tap here to enter text. a. How much energy is absorbed when 50.0 g of ammonia chloride decomposes? You must show all steps of your calculations for full credit. b. Calculate the change in enthalpy during the reverse reaction to produce 70 g of ammonium chloride. Is energy absorbed or released? You must show all steps of your calculations for full credit. 4. Mrs. Gussman's van has a cooling system with a capacity of 9.45 liters. She filled the van with a coolant that has a specific heat capacity of 7.95 J/g–°C and a density of 1.114 g/mL. The van produced 58,500 kilojoules of heat during her drive to camp. The coolant temperature increases from 87° C to 105° C. How many times did the volume of coolant turn over its volume to maintain the engine temperature during this trip? Page 2 of 4 Page 4 of 4