In an experimental setup similar to the one of your laboratory class, an unknown solid of mass molid=0.16 kg is heated to a temperature Tsolid = 181 °C and put into water of mass m= 1.1 kg at a temperature T= 23 °C which is in thermal equilibrium with the copper beaker of mass m Beaker=0.1 kg. If the equilibrium temperature is T = 23.69 °C, answer the = 387 kg °C following questions. (Cw = 4186 kg C copper °C J 1. Determine the specific heat of the solid: colid kg °C 2. Which metal is this? Specific Heat (J/kg °C) Substance Elemental solids Aluminum 900 Beryllium Cadmium 1 830 230 Copper Germanium Gold 387 322 129 Iron Lead 448 128 Silicon 703 Silver 234
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.
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