If I want to raise 1 gram of water 2°C, how much heat should I add?
There are two general types of heat; “Sensible” and “Latent.” Sensible Heat describes a process where the temperature changes as heat is added or removed. The definition of “Heat Capacity” plays a significant role in sensible heat; it is the ability of a substance to store heat. For pure water, the heat capacity is 1 cal / g °C (1 calorie per every gram of water per every degree change in Celsius), or in words; if I have 1 gram of water and I want to raise it 1°C, I must add 1 Calorie of heat.
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You must approach this question with an understanding of energy conservation. Change in Energy = mass*heat capacity*change in temperature, where heat capacity = 1.00 for pure water. By evaluating your conditions with the above definition of thermal energy, it will show that you must supply 2 calories of heat to the system.
If you were to add another substance to the original system. You would once again approach the problem using energy conservation. The energy of a hot liquid (mass1*heat capacity*change in temperature) + the energy of a cold liquid (mass2*heat capacity*change in temperature) = mass(1+2)*heat capacity*change in temperature.
-Christopher
2 calories
one BTU (1055 joules)....will strengthen the temp of one pound(454 g) of water one degree.... 2.32 joules to augment the temp of one million g of water a million degree so 4.sixty 5 Joules to augment a million g of water 2 ranges
Uh, why did you ask and answer your own question?