Bree baked a Yam Pie, and she only wants to eat it once the temperature reaches 25 degrees Celsius, so that it will not burn her. Initially she measured the temperature and the pie was 40 degrees Celsius. One minute later, the pie was 35 degrees. The ambient temperature of the room is 22 degrees. When should Bree start eating the pie?
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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(For this problem, you need to use Newton’s law of cooling which states that the rate of change of the temperature of an object is proportional to the difference between that temperature and the ambient temperature. Recall that a is proportional to b if there is k such that a = kb.)
Bree baked a Yam Pie, and she only wants to eat it once the temperature reaches 25 degrees Celsius, so that it will not burn her. Initially she measured the temperature and the pie was 40 degrees Celsius. One minute later, the pie was 35 degrees. The ambient temperature of the room is 22 degrees. When should Bree start eating the pie?
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