Assignment

1. Find the transition time of 20 g of naphthalene with the surrounding temperature at 30°C. Let the boiling tube have a mass of 25 g, diameter 2.5 cm, and thickness 0.15 cm.
2. How much time does 30 g of ice take to melt at a surrounding temperature of -5°C? (We are using a boiling tube having mass = 20 g, radius = 1.5 cm, thickness = 0.2 cm.)
3. In the above experiment, let the surrounding temperature be changed to 0°C. What will be the change in the transition time for ice?
4. Repeat the experiment for different surrounding temperatures and study the variation of the melting point of ice.
5. Calculate the melting point of wax having a mass of 30 g. Let us use a boiling tube of mass 25 g, with a thickness of 0.5 cm and radius 1.5 cm. (Choose surrounding temperature as 40°C.)