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AP Chemistry Chapter 6 Section 1-2 Calorimetry and Specific Heat Capacity 1. Calculate the specific heat of a metal if 45.0 grams of the metal at 100.0 C, when placed into 150.0 grams of water at 20.0 C, produces a final temperature of 22.5 C. 2. How many joules of heat are evolved by a reaction in a calorimeter where the temperature of the bomb and the water increases from 19.50C to 22.83C? The bomb has a heat capacity of 650.0 J/C, and the calorimeter contains 320.0 g of water. 3. Sulfur (2.56 grams) was burned in a calorimeter with excess 02(g) . The temperature increased from 21.25C to 26.72C. The bomb had a heat capacity of 923 J/C, and the calorimeter contained 815 grams of water a. Calculate the heat evolved as the sulfur burned: b. Calculate the heat per mole of SO2 formed in the course of the reaction S(s) + O2 (g) SO2 (g) 4. a. How many calories are required to heat 100.0 grams of copper from 10.0C to 100.0C if the specific heat of copper is 0.0930 cal/g-C? b. How many joules of energy are required in the above? 5. Given 35.0 grams of aluminum at 22.0 C. What will be the final temperature of the Al if 300.0 joules of heat energy is added to the Al? (The specific heat of Al is 0.217 cal/g-C.) 6. A 25.0 gram sample of a solid metal was heated to 100.0C and dropped into a calorimeter containing 90.0 grams of water at 25.32C. If the final temperature of the water and the metal was 28.78C, calculate the specific heat of the metal 7. A 55.0 gram sample of metal (Cp=0.145 cal/g-C) is heated to 100.0C and then placed into a calorimeter containing 125.o grams of water at 24.0C. Calculate the final temperature of the metal and of the water. 8. A student is required to experimentally find the specific heat of an unknown solid. The student is provided with a 15.0 gram sample of the solid, a Styrofoam cup which contains 100.0 grams of water at 20.0 C and a 250 beaker of boiling water (100.0C). The student places the solid sample into the boiling water and boils it for 10.0 minutes at which time the solid reaches a temperature of 100.0C. At this point the student quickly removes the solid from the boiling water and places the solid into the Styrofoam cup when the temperature of the water in the Styrofoam increases from 20.0C to 21.1C. Help the student and calculate the specific heat of the solid.