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प्रश्न
If, in a central heating system, steam enters a radiation pipe at 100°C and water leaves the radiation pipe at 100°C, can this radiation pipe heat a room? Give an explanation for your answer.
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उत्तर
Yes, because steam at 100°C gives out its latent heat of vaporisation to condense to water ut the same temperature of 100°C.
संबंधित प्रश्न
Given below are observations on molar specific heats at room temperature of some common gases.
| Gas |
Molar specific heat (Cv) (cal mol–1 K–1) |
| Hydrogen | 4.87 |
| Nitrogen | 4.97 |
| Oxygen | 5.02 |
| Nitric oxide | 4.99 |
| Carbon monoxide | 5.01 |
| Chlorine | 6.17 |
The measured molar specific heats of these gases are markedly different from those for monatomic gases. Typically, molar specific heat of a monatomic gas is 2.92 cal/mol K. Explain this difference. What can you infer from the somewhat larger (than the rest) value for chlorine?
Water in lakes and ponds do not freeze at once in cold countries. Give a reason is support of your answer.
State three ways to minimize the global warming.
What is meant by specific heat capacity?
What are the factors on which the quantity of heat given to a body depends?
Explain, why temperature in hot summer, falls sharply after a sharp shower?
Express the change in internal energy in terms of molar specific heat capacity.
