An aluminum cylindrical container has an overall surface area of 0.2 m² and a wall thickness of 50 cm. The temperature of the inner surface is 15.0°C, and the outside temperature is 25°C. If it takes 2.0 h for 20.0 kg of ice to melt in the container, describe the energy processes that occurred. Then, Let say, the same aluminum cylindrical container (only container not the situation) is fitted with a piston that moves freely and the water is replaced with a fixed amount of an ideal gas. The gas is at a temperature of 23°C with an initial volume of 1.5 x 10 m. Then the gas has been heated to a temperature of 95°C under constant pressure, state the new condition of the volume as the gas is heated. Explain your answer in terms of motion the molecules. Calculate the new volume. If the mass of each gas molecule is 5.7 x 10 kg, calculate the average speed of the gas molecules at 95°C.

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Energy transfer

The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.

Molar Specific Heat

Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1) 

Thermal Properties of Matter

Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.