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प्रश्न
उत्तर
30. Let C be the specific heat capacity of water.
Let final temperature of the mixture be 8°C.
Heat energy lost by hot water = Heat energy gained by cold water
2 x C x (80 - 8) = 8 x C x (8 - 25)
or, 2(80 - 8) = 8 (8 - 25)
or,80 - 8 = 48 - 100
or, 58 = 180
0 = 36
So, the final temperature of water will be 36°C.
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संबंधित प्रश्न
Name the law on which principle of Calorimetry is based
Give scientific reasons for the following:
Bottled drinks are cooled more effectively when surrounded by lumps of ice than by cold water at 0°.
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Two bodies in contact are said to be in thermal equilibrium, if they have same ...........
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Ice at o0C is colder than ...........at o0C.
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Steam at 100oC is hotter than water at ............
1 kg of ice at 0o is heated at constant rate and its temperature is recorded after every 30 s till steam is formed at 100o C. Draw a temperature time graph to represent the change of phase.
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A heater supplies heat at the rate of 800 J/s. Find the time required to convert 50g of ice at -20°C into superheated steam at 140°C.
(Given: Specific heat of ice = 2.1 J/g, latent heat of ice = 340 J/gm, latent heat of steam = 2240 J/gm, specific heat of steam = 2.1 J/gm and specific heat of water = 4.2 J/gm.)
Write one characteristic property of the material chosen for making a calorimeter.
