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प्रश्न
Can we define specific heat capacity at constant temperature?
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उत्तर
Specific heat capacity, s =`(triangle "Q") /(m triangleT)`, where `(triangle "Q")/m` is the heat supplied per unit mass of the substance and ΔT =0 ; therefore , s = infinity . So, we cannot define specific heat capacity at constant temperature.
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संबंधित प्रश्न
Given below are densities of some solids and liquids. Give rough estimates of the size of their atoms:
| Substance | Atomic Mass (u) | Density (103 Kg m-3) |
| Carbon (diamond) | 12.01 | 2.22 |
| Gold | 197.00 | 19.32 |
| Nitrogen (liquid) | 14.01 | 1.00 |
| Lithium | 6.94 | 0.53 |
| Fluorine (liquid) | 19.00 | 1.14 |
[Hint: Assume the atoms to be ‘tightly packed’ in a solid or liquid phase, and use the known value of Avogadro’s number. You should, however, not take the actual numbers you obtain for various atomic sizes too literally. Because of the crudeness of the tight packing approximation, the results only indicate that atomic sizes are in the range of a few Å].
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