Determine the quantity of heat transferred by 20.0 grams of water where the temperature of the water changes from 65°C to 20°C, the temperat

Question

Determine the quantity of heat transferred by 20.0 grams of water where the temperature of the water changes from 65°C to 20°C, the temperature of the room

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Thiên Di 3 years 2021-08-14T03:19:03+00:00 1 Answers 8 views 0

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  1. Sapo1
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    2021-08-14T03:20:08+00:00
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    Answer:

    3780J

    Explanation:

    Data obtained from the question include:

    M (mass) = 20g

    T1 (initial temperature) = 65°C

    T2 (final temperature) = 20°C

    ΔT (change in temperature) =

    T1 — T2 (since we are cooling)

    ΔT = 65 — 20 = 45°C

    C (specific heat capacity) = 4.2J/g°C

    Q (heat) =?

    Q = MCΔT

    Q = 20 x 4.2 x 45

    Q = 3780J

    Therefore, the heat transferred is 3780J

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