a bad conductor of heat? How is it possible
to heat water easily while cooking?
VI. Numerical Problems.
1. What is the heat in joules required to raise the
temperature of 25 grams of water from 0°C to
100°C? What is the heat in Calories? (Specific
heat of water = 4.18 J/gºC) (Ans. 10450 T)
2. What could be the final temperature of a
mixture of 100 g of water at 90 °C and 600g
of water at 20°C.
(Ans. 30°C)
3. How much heat energy is required to change
2 kg of ice at 0°C into water at 20°C? (Specific
latent heat of fusion of water = 3,34,000 J/kg,
Specificheat capacity of water = 4200 JKg 'K').
(Ans. 8,36,000)
Heat
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