- #1
heartshapedbox
- 30
- 0
Homework Statement
A 1.0kg of ice at 0◦C, 3.0kg of water at 0◦C, and 5.0kg of iron at temperature T are placed in a sealed and insulated container. cFe =400J/ kg◦C ,cWater=4200J/ kg◦C , cIce= 2000 J/ kg◦C
latent heat for ice is 3.3×105 J .
The equilibrium temperature is 20◦C.
Homework Equations
Q=mcΔT
Q=ml
The Attempt at a Solution
0=Qice→water+Qice+Qwater+Qiron
=ml(ice)+mcΔT(ice)+mcΔT(water)+mcΔT(iron)
=(1.0)(330000)+(1.0)(2000)(20-0)+(3.0)(4200)(20-0)+(5.0)(400)(20-Ti)
Ti=331°C
BUT the answer says it should be 353°