calculate the amount of energy needed to take 34g of ice at -2°C to 118°C​

Question

calculate the amount of energy needed to take 34g of ice at -2°C to 118°C​

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Thiên Thanh 1 week 2021-07-22T04:40:22+00:00 1 Answers 0 views 0

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    2021-07-22T04:41:25+00:00

    Answer:

    Q = 8608.8 J

    Explanation:

    Given that,

    The mass of ice, m = 34 g

    The temperature changes from -2°C to 118°C​.

    The specific heat of ice, c = 2.11 J/g°C

    The heat energy needed,

    Q=mc\delata T\\\\Q=34\times 2.11\times (118-(-2))\\Q=8608.8\ J

    So, 8608.8 J of energy is needed.

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )