Hello!
This situation is relatively simple, because there is no phase change (no melting of ice, no vaporizing of water). Therefore the quantity of heat energy needed to raise water temperature is directly proportional to a temperature change.
The general formula is where
is the quantity of heat added (or removed),
is the mass of a substance,
is the temperature change (positive or negative) and
is...
Hello!
This situation is relatively simple, because there is no phase change (no melting of ice, no vaporizing of water). Therefore the quantity of heat energy needed to raise water temperature is directly proportional to a temperature change.
The general formula is where
is the quantity of heat added (or removed),
is the mass of a substance,
is the temperature change (positive or negative) and
is the so-called specific heat. It depends on a substance.
For water, and one liter of water is about
Thus the energy needed is
This is the answer.
That said, water has very high specific heat, almost ten times greater than that of iron, for example.
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