A 6.0-g sample of copper metal at 25.0C is heated by the addition of 84.0J of energy. The final temperatureof the copper is what? The specific heat capacity of aluminum is 0.38J/g-K

Use the formula:

Q = mc\Delta T

Q = 84 J
m = 6 g
c = 0.38 J/gK
\Delta T = T_f - T_i = T_f - 25 C

Since there is a linear relationship between the Celsius scale and the kelvin scale, you can leave the units as they are. Find Tf, the final temperature.