If heating 3 g of a substance by 2 °C requires X joules of heat, how much heat will be needed to heat 9 g of the same substance by 4 °C?

Question

If heating 3 g of a substance by 2 °C requires X joules of heat, how much heat will be needed to heat 9 g of the same substance by 4 °C?

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Trúc Chi 5 years 2021-08-10T13:34:30+00:00 2 Answers 12 views 0

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  1. thuthao
    0
    2021-08-10T13:35:41+00:00
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    q=mct, for this problem c is constant since the same object is being used. so first condition: x= 3 * 2 * c = 6c, second condition: y = 9 * 4 * c = 36c, where y is our answer. using these equations: y=6x , the answer is 6x

  2. quangkhai
    0
    2021-08-10T13:36:21+00:00
    Reply

    Answer:

    Explanation:hffdghbjhhfgdvbjnjhjvcfgdfcvhjkm,kjjhgjh

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