A Lab Student Drops a 400

Multiple Choice

A lab student drops a 400.0-g piece of metal at 120.0°C into a cup containing 450.0 g of water at 15.0°C.After waiting for a few minutes,the student measures that the final temperature of the system is 40.0°C.What is the specific heat of the metal,assuming that no significant heat is exchanged with the surroundings or the cup? The specific heat of water is 4186 J/kg ∙ K.

A) 1470 J/kg ∙ K
B) 2830 J/kg ∙ K
C) 3420 J/kg ∙ K
D) 3780 J/kg ∙ K
E) 4280 J/kg ∙ K