NAME________
HEAT LAB 05:
PART ONE
PREDICT THE
TEMPERATURE!!
Take an amount of
Hot Water and half the amount of Cold Water.
Predict what you
think the final temperature will be!
Mix Them!
|
OBJECT |
MASS |
StartingTemp |
Final Temp |
SpecificHeat |
|
Hot Water |
|
|
|
4187 J/kg/°C |
|
Cold Water |
|
|
|
4187 J/kg/°C |
How much heat did
the Hot Water lose?
ΔQ
= mCΔT
How much heat did
the Cold Water gain?
ΔQ=mCΔT
Are these the
same? Should they be? What should’ve the final temperature been? What is your
percent error? Why? Explain what happened in terms of the molecules and heat
transfer.
PART TWO:
Determine the
specific heat of aluminum!
Place an amount of
HOT water in an aluminum calorimeter, along with an amount of an ice cube. When
the ice melts, determine the final temperature and the specific heat of the
calorimeter.
|
OBJECT |
MASS |
START TEMP |
FINAL TEMP |
SPECIFIC HEAT |
Heat of Fusion |
|
Al Cup |
|
|
|
?? |
XXXXX |
|
Water |
|
|
|
4187 J/kg/°C |
XXXX |
|
ICE |
|
0 °C |
|
2090 J/kg/°C |
3,335,000 J/kg |
How much energy
did the hot water lose?
How much energy
did the ice gain by melting?
How much energy
did the ice gain by heating up (as water)?
How much energy
must’ve the Al cup gained?
What is the
specific heat of Al according to your lab?
How does this
compare with the real specific heat?
What is your
percent error?
Why?
Explain what
happened in terms of the molecules and heat transfer.