AIM : to find specific heat of a given solid. MATERIAL REQUIRED : calorimeter, thermometer,stirrer,water,steam heater, wooden box and lead shots. PROCEDURE: measure the mass of the calorimeter along with stirrer. Mass of the calorimeter, m1 =.................. Now fill the third of the volume of calorimeter with water. Measure its mass and its temperature. Mass of the calorimeter plus water,m2 =............ Mass of the water , m2-m1=..... Temprature of water in calorimeter , T1=...... NOTE: CALORIMETER AND WATER ARE AT SAME TEMPERATURE. Take a few lead shots and place tgem in hot water or steam heater. Heat them upto a temperature 100°C. Let this temperature be T2. Transfer the lead shots quivkly into the calorimeter (with minimum loss of heat). You will notice that the mixture settles to a certain temperature after some time. Measure this temperature T3 and mass of the calorimeter along with contents (water and lead shots). Mass of the calorimeter along with contents, m3=....... Mass of lead shots, m3-m2=........ Since there is no loss of heat to surroundings , we can assume that the entire heat lost by the solid(lead shots) is transferred to the calorimeter and water to reach the final temperature. Let the specific heats of the calorimeter, lead shots and water be sc,sl and sw respectively. According to method of mixtures heat lost by the solid = heat gained by the calorimeter+ heat gained by water. FORMULA : sl= [m1sc+(m2-m1)sw](T3-T1)/(m3-m2)(T2-T3).
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