ralph907
contestada

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​

Respuesta :

Answer:

Mass, m = 0.06 kg

Explanation:

It is given that,

Heat absorbed by copper object is 1386 J

Initial temperature, [tex]T_i=20^{\circ}\ C[/tex]

Final temperature, [tex]T_f=80^{\circ} C[/tex]

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 :

[tex]Q=mc\Delta T[/tex]

m is mass of copper

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

So, the mass of the copper is 0.06 kg.

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