- If We Solve Equation 1 For C We Obtain 0 Ce M At 2 Notice That The Units Of C Are Caleg C In Agreement With O 1 (104.57 KiB) Viewed 45 times
- If We Solve Equation 1 For C We Obtain 0 Ce M At 2 Notice That The Units Of C Are Caleg C In Agreement With O 2 (100.89 KiB) Viewed 45 times
If we solve Equation (1) for "C" we obtain 0 CE m. AT (2) Notice that the units of "C" are caleg ''c'in agreement with our previous statement. PROCEDURE The purpose of this experiment is to determine the specific heats of three different metals. A metal block is heated to 100°C by immersion into a beaker of boiling water. It is then quickly removed and placed into an insulated container filled with water whose temperature has previously been determined. The hot metal block will raise the water temperature to some maximum. At this time the water and the metal will be at the same temperature and are said to be in thermal equilibrium. The amount of heat given off by the metal block, as it decreases in temperature, is equal to the amount of heat gained by the water. Qetal = Q water (3) or m metal C metal AT metal = m water. Cwater AT water (4) The mass of the metal and the water can be determined by weighing both objects prior to the experiment. "Cwater" is known to have a value of 1 calz g'='c and the two different temperature changes are determined experimentally. Equation (4) can be solved for "Cmetai". a Step 1. Boil some distilled water in a beaker. Step 2. Weigh a metal block to the nearest 0.1 g and record its weight. Step 3. Weigh a styrofoam cup and record its weight. Fill the cup at least half full with distilled water and weigh the cup again. Record the weight. Measure and record the temperature of the water to the nearest 0.5°C. 36
Qmetal = Q water (3) on m metal C metal AT metal = m water C water. At water (4) The mass of the metal and the water can be determined by weighing both objects prior to the experiment. "Cwater" is known to have a value of 1 calzg'= °C and the two different temperature changes are determined experimentally. Equation (4) can be solved for "Cmetal". Step 1. Boil some distilled water in a beaker. Step 2. Weigh a metal block to the nearest 0.1 g and record its weight. Step 3. Weigh a styrofoam cup and record its weight. Fill the cup at least half full with distilled water and weigh the cup again. Record the weight. Measure and record the temperature of the water to the nearest 0.5°C. 36 Step 4. Place the metal block into the boiling water and leave it there for two or three minutes. After this time quickly remove it and place it into the styrofoam cup containing the water. Step 5. At 15 second intervals measure and record the water temperature. In order to get uniform readings, you may stir the water with your thermometer, but be careful not to hit it against the metal. Keep on recording the water temperature until you begin to see a significant drop in the water temperature. Step 6. Repeat the same procedure for the other two metals provided. Be sure to start out with a new, cool, and weighed amount of water in the styrofoam cup. CAT CITATIONS