physics
posted by Anonymous .
a .250kg block of aluminum is heated to 100 C and then dropped into .60 kg of water that is initially at 20C. What is the equilibrium temperature of the system? The specific heat of aluminum is .22 kcal/kg C

The sum of the heats gained is zero.
heatgainedAl+heatgainedWater=0
.250*.22*(Tf00)+.6*c*(Tf20)=0
solve for Tf 
thanks!