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How much heat is required to increase th...

How much heat is required to increase the temperature of a piece of platinum of mass 100 g from `20^(@)C` to `70^(@)C`? Specific heat of platinium `="0.03 cal. G"^(-1).^(@)C^(-1)`.

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150 cal
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A room contains 50 L air at 30^(@)C. Density of air is "1.5 g. L"^(-1) . How much heat will be required to increase the temperature of air to 60^(@)C ? Specific heat of air ="0.2 cal. G"^(-1).^(@)C^(-1) .

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Knowledge Check

  • How much heat is required to raise the temperature of 100 gm of water from 30^@C to its boiling point?

    A
    27.78
    B
    35
    C
    38
    D
    25

  • If the heat required to raise the temperature of a body of mass m through t^0C is H. then the specific heat of the substance of the body is

    A
    Hm/t
    B
    Hmt
    C
    Ht/m
    D
    H/mt

    • Similar Questions

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    What is the amount of heat required to increase the temperature of 7 g N_2 by 50^@C .

    In which case more heat is required ? (i) Temperature of 1 kg of water is raised from 30^(@)C to 100^(@)C . (ii) Temperature of 3 kg of iorn, is raised from 30^(@)C to 230^(@)C . (specific heat of iron ="0.12 cal.g"^(-1).^(@)C^(-1) .)

    How much heat will be released when the temperature of 1 mol of water changes from 90^(@)C to 80^(@)C ? Given: specific heat of water 4.18J*g^(-1)*K^(-1) .

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