The energy needed the raise the temperature of the block of silver is given by:
[tex]Q=mC_s \Delta T[/tex]
where m is the mass of the block, Cs the specific heat capacity of silver and [tex]\Delta T[/tex] its increase in temperature.
Using the numbers of the problem, we find
[tex]Q=(8 g)(0.235 J/gC)(50 C)=94 J[/tex]