At a foundry, 22 kg of molten aluminum with a temperature of 660.4◦C is poured into a mold. If this is carried out in a room containing 150 kg of air at 25◦C, what is the temperature of the air after the aluminum is completely solidified? Assume that the specific heat capacity of air is 1.0×10^3 J/kg · ◦C. The specific heat of aluminum is 899 J/kg · ◦ C and its latent heat of fusion is 3.97 × 10^5 J/kg. Answer in units of ◦C
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.
At a foundry, 22 kg of molten aluminum with
a temperature of 660.4◦C is poured into a
mold.
If this is carried out in a room containing
150 kg of air at 25◦C, what is the temperature
of the air after the aluminum is completely
solidified? Assume that the specific heat capacity of air is 1.0×10^3
J/kg ·
◦C. The specific
heat of aluminum is 899 J/kg ·
◦ C and its latent heat of fusion is 3.97 × 10^5
J/kg.
Answer in units of ◦C
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