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19 March, 22:50

You wish to cook some pasta and so take some water and heat it on a stove. If you use 2000 grams of water with an initial temperature of zero degrees C, how much energy would you need to add to raise the temperature to 100° C is all of the stove energy went into heating the water?

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  1. 20 March, 01:19
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    the stove energy went into heating water is 837.2 kJ.

    Explanation:

    given,

    mass of water = 2000 grams

    initial temperature = 0° C

    Final temperature = 100° C

    specific heat of water (c) = 4.186 joule/gram

    energy = m c Δ T

    = 2000 * 4.186 * (100° - 0°)

    = 837200 J

    = 837.2 kJ

    hence, the stove energy went into heating water is 837.2 kJ.
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