physical
posted by Anonymous .
Specific Heat. Copper has a specific heat of 0.092 cal/g/deg C. A 75 gram copper mass has been heated to a temperature of 100 degrees C. The copper is placed in thermal contact with 50 grams of water at 25 degrees C. What will be the final equilibrium temperature of the copper and water? (Specific heat of water = 1 cal/g/deg C.)

Sum of heats gained=0 (some lose heat, so are negative)
Heatgained water+heatgainedCu=0
50*1*(tf25)+ 75*.092*(tf100)=0
solve for tf.