b. If 0.3kg of the water in the bucket is poured into a kettle at 7°C i. How much energy is needed to boil the kettle (raise the temperature to 100C)? ii. How much energy is needed to evaporate all the water in the kettle? (c for water = 4.2 x 10° J kg' K', Latent Heat of Vaporisation = 2.3 x %3D 10° Jkg')
b. If 0.3kg of the water in the bucket is poured into a kettle at 7°C i. How much energy is needed to boil the kettle (raise the temperature to 100C)? ii. How much energy is needed to evaporate all the water in the kettle? (c for water = 4.2 x 10° J kg' K', Latent Heat of Vaporisation = 2.3 x %3D 10° Jkg')
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Transcribed Image Text:b. If 0.3kg of the water in the bucket is poured into a kettle at 7°C
i. How much energy is needed to boil the kettle (raise the temperature to
100C)?
ii. How much energy is needed to evaporate all the water in the kettle?
(c for water = 4.2 x 10³ J kg' K'', Latent Heat of Vaporisation = 2.3 x
%3D
10° Jkg")
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