anon_ch posted a question
A volume of 120 mL of H2O is initially at room temperature (22.0 C). A chilled steel rod at 2.00 C is placed in the water. If the final temperature of the system is 21.1 C , what is the mass of the steel bar?
specific heat of water ='s 4.18 J/(g* C)
specific heat of steel ='s .452 J/ (g* C)