Se dispone de dos vasos con agua a 20 grados y queremos calentarlo hasta alcanzar 50 grados. Si el primero contiene 0,5l y el segundo, 750ml

Question

Se dispone de dos vasos con agua a 20 grados y queremos calentarlo hasta alcanzar 50 grados. Si el primero contiene 0,5l y el segundo, 750ml, cual de los dos requerirá mas cantidad para alcanzar la temperatura deseada? Porque?

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Hải Đăng 5 years 2021-09-05T11:29:34+00:00 1 Answers 19 views 0

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  1. nguyetanh
    0
    2021-09-05T11:31:31+00:00
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    Answer:

    The cup with 0.5L

    Explanation:

    To know what amount of water you take into account the specific heat of the water. The specific heat of water is:

    c_{water}=4186\frac{J}{kg\°C}

    Thus, 4186 J of energy are needed to icrease the temperature of 1 kg water in 1°C. Then, more grams of water will need more energy.

    You have that one cup has 0.5 L and the other one has 750mL = 0.75L

    The second cup of water will need more heat because the amount of water contained in the second cup is greater than in the first cup with 0.5L

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