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प्रश्न
State, with reason, which of the two, boiling water or steam both at 100°C will produce more severe burns.
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उत्तर
Steam at 100°C will produce more severe burns because every gram of steam gives out 2260 J of heat energy while condensing. This much amount of heat is additional to the heat contained in one gram of boiling water.
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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?
50 g of metal piece at 27°C requires 2400 J of heat energy so as to attain a temperature of 327°C . Calculate the specific heat capacity of the metal.
What is meant by specific heat capacity?
Water boils at 120 °C in a pressure cooker. Explain the reason.
Is it possible to condense the water formed, back to ice by adding ice at 0°C. Explain with reason.
Describe a method to determine the specific heat capacity of a solid (say, a piece of copper).
Why is water used as a coolant in radiators of a car?
Specific heat capacity C = ______.
Thermal capacities of substances A and B are same. If mass of A is more than mass of B then:
Which substance will have more specific heat capacity?
