3 points 1) If 1,386 J heat is absorbed by a copper object when it is heated from 20.0-C to 80.0-C, what is the mass of the copper

Question

3 points
1) If 1,386 J heat is absorbed by a copper object when it is heated from
20.0-C to 80.0-C, what is the mass of the copper? The specific heat of
copper is 385 J/kg C.*

A. 3.7 kg
B.02.87 kg
C. 06 kg
D. 1.5kg​

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Kiệt Gia 4 years 2021-07-17T02:03:59+00:00 1 Answers 61 views 0

Answers ( )

  1. Nick
    0
    2021-07-17T02:05:29+00:00
    Reply

    Answer:

    Mass, m = 0.06 kg

    Explanation:

    It is given that,

    Heat absorbed by copper object is 1386 J

    Initial temperature, T_i=20^{\circ}\ C

    Final temperature, T_f=80^{\circ} C

    Specific heat of copper, c = 385 J/kg C

    We need to find the mass of the copper. The formula of specific heat is given by :

    Q=mc\Delta T

    m is mass of copper

    m=\dfrac{Q}{c(T_f-T_i)}\\\\m=\dfrac{1386}{385\times (80-20)}\\\\m=0.06\ kg

    So, the mass of the copper is 0.06 kg.

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