2 Melting points mp of naphthalene i Put a very small amount of naphthalene in a capillary tube sealed at one end You can pull out the capillary tube from heated glass tubing Use a rubber band to attach the capillary tube sealed end down to a thermometer Heat a thermometer and capillary tube in a beaker of water on a tripod Use the thermometer to stir the water but do not let water enter the capillary tube Slowly raise the temperature of the water Note the temperature of the naphthalene when it melts Let it cool and note the temperature when the naphthalene solidifies Calculate the average of these two values ii Use a clean testtube and thermometer to repeat the experiment using stearic acid mp 69o or use any other substance mp  100oC