A steel casting weighing 2 kg has an initial temperature of 500 degrees C; 40 kg of water initially at 25 degrees c is contained in a perfectly insulated steel tank weighing 5 kg. the casting is immersed in the water and the system is allowed to come to equilibrium. What is its final temperature? Ignore effects of expansion or contraction, and assume constant specific heats of 4.18 kJ/(kg K) for water and .50 kJ/(kg K) for steel.
I'm stuck because it seems like I need some other measurement--maybe for Q? I think work=0 because it's an insulated system but that doesn't get me very far. And how do I use to specific heats at a time?
I'm stuck because it seems like I need some other measurement--maybe for Q? I think work=0 because it's an insulated system but that doesn't get me very far. And how do I use to specific heats at a time?