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

Question

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

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Thiên Ân 5 months 2021-08-21T22:31:29+00:00 1 Answers 7 views 0

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    0
    2021-08-21T22:33:17+00:00

    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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