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6 Cards in this Set
- Front
- Back
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Three things that dictate quantity of heat transferred to or from an object when its temperature changes |
1. The quantity of the material 2. The size of the temperature change 3. The identity of the substance gaining or losing heat |
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Specific heat capacity (C) |
the quantity of heat required to raise the temperature of 1 gram of a substance by one Kelvin (or degree Celsius). The unit is joules/gram(Kelvin) - J/g(K). |
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q = mC∆T |
Used when only given information about the substance q = heat transferred (in joules) m = mass of the substance (in grams) C = specific heat capacity (in J/g(K)) ∆T = change in temperature (in K) = Tfinal – Tinitial |
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mC∆T = - mC∆T |
Used when two substances come in contact with each other. |
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Joules in 1 L⋅atm kJ in 1 L⋅atm |
101 J .101 kJ |
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How many J of heat are necessary to raise the temperature of a 1.05−kg block of iron from 26.0∘C to 85.5∘C? Knowing the specific heat of iron metal is 0.450 J/g⋅K. |
q = mC∆T q = 1050gFe * 0.450 * (59.5 ∆Kelvin) q = 28100 J |
