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An electrical heater of 2 KW is used to heat 0.5kg of water in a...

An electrical heater of 2 KW is used to heat 0.5kg of water in a kettle of heat capacity 400J K-1. The initial water temperature is 20°C
neglecting heat loses: (I) how long will it take to heat the water to it's boiling point, 100°C ? (ii) starting from 20°C what mass of water is boiled away in 5mins? (assume for water, specific heat capacity= 4200j kg-1 k-1 and specific latent heat of vaporisation = 2*10 raise to power 6 j kg_1)?
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Asked by Emmanuel on 14th March, 2024
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WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
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WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC offline past questions - with all answers and explanations in one app - Download for free
WAEC May/June 2024 - Practice for Objective & Theory - From 1988 till date, download app now - 99995
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 24709