A student drops two metallic objects into a 32 g steel container holding 169 g of water at 29C. One object is a 486 g cube of copper that is initially at 58C, and the other is a chunk of aluminum that is initially at 6.9C. To the student’s surprise, the water reaches a final temperature of 29C, precisely where it started.
What was themass of the aluminumchunk?
Assume the specific heat of aluminum is 900 J/kg* C and of copper 387 J/kg* C.