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9 January, 23:27

What is the specific heat of a substance if 1560 cal are required to raise the temperature of a 312-g sample by 5 degrees celsius?

A) 0.033 cal/g*C

B) 0.33 cal/g*C

C) 0.99 cal/g*C

D) 1.33 cal/g * C

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Answers (1)
  1. 10 January, 03:27
    0
    0.33 cal/g*C

    Explanation:

    The amount of heat required is determined from the formula

    q

    =

    m

    c

    Δ

    T

    ,

    where

    q

    is the amount of heat transferred

    m

    is the mass of the substance

    c

    is the specific heat capacity of the substance

    Δ

    T

    is the change in temperature

    q

    =

    1560 cal

    m

    =

    312 g

    Δ

    T

    =

    15 °C

    c

    =

    q

    m

    Δ

    T

    =

    1560 cal

    312 g * 15 °C

    =

    0.33 cal⋅g

    -1

    °C

    -1
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