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12 June, 22:37

How much heat is needed to raise the temperature of 1 kg of iron from 25 degree to 30 degrees?

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Answers (1)
  1. 12 June, 23:51
    0
    Answer:300 joules

    Explanation:The formula for specific heat is:

    E

    =

    m

    c

    θ

    , where:

    E

    is the energy needed in joules,

    m

    is the mass in kilograms,

    c

    is the specific heat,

    θ

    is the change in temperature, Celsius of Kelvin doesn't matter.

    Here,

    m

    =

    0.125

    kg

    c

    =

    480

    J/kg



    C

    θ

    =

    5



    C

    , and inputting:

    E

    =

    0.125



    480



    5

    E

    =

    300

    J

    of energy is needed.
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