A copper Vessel weighs 2.5 kg. Calculate the quantity of heat required to raise its temperature from 20°C to 70°C . take Specific heat of of copper as 0.377kj/kg K
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Answer:
(i) Mass of copper vessel = 150 g
= 0.15 kg
The specific heat capacity of copper = 410Jkg
−1
K
−1
.
Heat capacity = Mass × specific heat capacity
= 0.15kg×410Jkg
−1
K
−1
= 61.5JK
−1
Change in temperature= (35−25)
o
C=10
o
C=10K
(ii) Energy required to increase the temperature of vessel
△Q=mc△T
= 0.15×410×10
= 615 J
Explanation:
(i) Mass of copper vessel = 150 g
= 0.15 kg
The specific heat capacity of copper = 410Jkg
−1
K
−1
.
Heat capacity = Mass × specific heat capacity
= 0.15kg×410Jkg
−1
K
−1
= 61.5JK
−1
Change in temperature= (35−25)
o
C=10
o
C=10K
(ii) Energy required to increase the temperature of vessel
△Q=mc△T
= 0.15×410×10
= 615 J
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