How much heat must be added to make a 5g substance with a specific heat of 2 J/gC that has its temperature go up 10 degrees? Q = m•C•ΔT

Question

How much heat must be added to make a 5g substance with a specific heat of 2 J/gC that has its temperature go up 10 degrees? Q = m•C•ΔT

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Neala 3 years 2021-08-25T01:44:29+00:00 1 Answers 41 views 0

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    2021-08-25T01:46:00+00:00

    Answer:

    100 Joule

    Explanation:

    Amount of heat in agiven body is given by Q = m•C•ΔT

    where m is the mass of the body

    c is the specific heat capacity of body. It is the amount of heat stored in 1 unit weight of body which raises raises the temperature of body by 1 unit of temperature.

    ΔT is the change in the temperature of body

    ___________________________________________

    coming back to problem

    m = 5g

    C = 2J/gC

    since, it is given that temperature of body increases by 10 degrees, thus

    ΔT = 10 degrees

    Using the formula for heat as given

    Q = m•C•ΔT

    Q = 5* 2 * 10  Joule= 100 Joule

    Thus, 100 joule heat must be added to  a  5g substance with a specific heat of 2 J/gC to raise its temperature go up by 10 degrees.

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