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melemonca
Lv 5
melemonca asked in Ciencias y matemáticasFísica · 1 decade ago

¿Cuánta energía en kW se necesitan para calentar 1 litro de agua, digamos, de 0 a 100°C?

1 Answer

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  • andyce71
    Lv 7
    1 decade ago
    Favorite Answer

    la energia necesaria es

    Q = mCpDT

    entonces

    Q = 1kg x 4.18kj/kgC x (100C - 0) = 418 kj

    ahora si tu quieres saber los watts solo debes de fijar el tiempo en que quieras calentar el agua de los 0 a los 100C.

    y entonces emplearias la formula

    KW = 418 kJ/t

    el tiempo lo debes poner en segundos..

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