1. The problem statement, all variables and given/known data a 4kg iron hammer is initally 700 degree celcius is droppped into a bucket containing 20kg of water at 25degree celcius. what is the final temperture 2. Relevant equations q=mc(delta)T 3. The attempt at a solution m1=4kg m2=20kg T1=700=973K T2=25=298 i know the system is in equilibrium but i dont know how to solve it correctly.. so heres my shot at it Q=mc(delta)T =(4)(449J/kgK)(Tf-973)=(20)(4190J/kgK)(Tf-298) i think i'm doing this question wrong because .. when i solve for Tf i get a negative number of -288.66K help?