Question #56574

1 Answer
MeneerNask
Mar 17, 2015

Specific heat is defined as #J//(K*kg) or J*K^-1*kg^-1#
(=energy per degree per kilogram of mass)

So you just divide heat capacity of the object by the mass:

#c_"silver"=(42.8J//K)/(0.181kg)~~236J/(K*kg)#

Extra :
Officially, specific heat is defined as the amount of energy needed to raise the temperature of #1kg# by #1K#. Since a temperature difference of #1K# is equal to one of #1^oC# this is no problem.
Since the SI-unit of mass is #kg# in stead of #g# the official answer should be: #236J//(K*kg)# or #236J*K^-1*kg^-1#
But most people use the earlier notation of #J//g*^oC#
which will turn out to be #0.236J//g*^oC#

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