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प्रश्न
1 kg of water freezes to form ice at 0°C. What amount of heat is withdrawn?
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उत्तर
3,36,000 J.
संबंधित प्रश्न
You have a choice of three metals A, B, and C, of specific heat capacities 900 Jkg-1 °C-1, 380 Jkg-1 °C-1 and 460 Jkg-1 °C-1 respectively, to make a calorimeter. Which material will you select? Justify your answer.
What property of water makes it an effective coolant?
Water is used in hot water bottles for fomentation. Give a reason.
Give one example where high specific heat capacity of water is used as heat reservoir ?
Describe a method to determine the specific heat capacity of a solid, like a piece of copper ?
Give three reasons for the increase of green house gases.
What is meant by specific heat capacity?
Derive an expression for finding out the specific heat capacity of a body (solid) from the readings of an experiment given below:
(i) Mass of empty calorimeter (with stirrer) = m1 gm
(ii) Mass of the metal piece = M gm
(iii) Mass of colorimeter and water = m2 gm
(iv) Initial temperature and water = t1°C
(v) Temperature of hot solid (metal piece) = t2 °C
(vi) Final temperature of the mixture = t°C
(vii) Specific heat of calorimeter = 0.4 J gm / °C
Explain why the specific heat capacity at constant pressure is greater than the specific heat capacity at constant volume.
Which method is used to determine the specific heat capacity of both solids and liquids by mixing a substance of unknown specific heat with water?
