What would be the final temperature of the
system if 16.6 g of lead at 138 ◦C is dropped
into 23.4 g of water at 8.68 ◦C in an insulated
container? The specific heat of lead is 0.128
J/g◦C.

Question

What would be the final temperature of the
system if 16.6 g of lead at 138 ◦C is dropped
into 23.4 g of water at 8.68 ◦C in an insulated
container? The specific heat of lead is 0.128
J/g◦C.

rhal3112 · Answer

HELP ME PLEASE

cuanchi · Answer

heat lost by lead + heat gained by water = 0 

[mass Pb x specific heat Pb x (Tfinal-Tinitial)] + [mass H2O x specific heat H2O x (Tfinal-Tinitial)] = 0 
Substitute all the number and solve for Tfinal. That's the only unknown in that long string.