What quantity of heat is transferred when a 150.0g block of iron metal is heated from 25.0°C to 73.3°C? What is the direction of the heat fl

Question

What quantity of heat is transferred when a 150.0g block of iron metal is heated from 25.0°C to 73.3°C? What is the direction of the heat flow?​

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Philomena 6 months 2021-07-13T17:25:27+00:00 1 Answers 169 views 0

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    2021-07-13T17:26:38+00:00

    Answer:

    Heat is flowing into the metal.

    Explanation:

    From the question given above, the following data were obtained:

    Mass (M) of iron = 150 g

    Initial temperature (T₁) = 25.0°C

    Final temperature (T₂) = 73.3°C

    Direction of heat flow =?

    Next, we shall determine the change in the temperature of iron. This can be obtained as follow:

    Initial temperature (T₁) = 25.0 °C

    Final temperature (T₂) = 73.3 °C

    Change in temperature (ΔT) =?

    ΔT = T₂ – T₁

    ΔT = 73.3 – 25

    ΔT = 48.3 °C

    Next, we shall determine the heat transfered. This can be obtained as follow:

    Mass (M) of iron = 150 g

    Change in temperature (ΔT) = 48.3 °C

    Specific heat capacity (C) of iron = 0.450 J/gºC

    Heat (Q) transfered =?

    Q = MCΔT

    Q = 150 × 0.450 × 48.3

    Q = 3260.25 J

    Since the heat transferred is positive, it means the iron metal is absorbing the heat. Thus, heat is flowing into the metal.

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