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​

Answer 1

Mass, m = 0.06 kg

Step-by-step 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=(Q)/(c(T_f-T_i))\\\\m=(1386)/(385* (80-20))\\\\m=0.06\ kg`

So, the mass of the copper is 0.06 kg.