ICP
12/11/12
Specific Heat Lab
Warmup
1) Calculate the energy required to raise 1 kg of
water by 2 degrees Celsius. (Use E=cmΔT)
2) Two objects are in a heavily insulated box.
Object A transfers 25 J of heat to Object B.
a) How many joules of heat did Object B absorb?
b) Which object was hotter at the beginning?
Agenda
• Check homework (front side of specific heat
worksheet)
• Go over homework.
• Specific Heat Lab
• Teach how to calculate equilibrium
temperature. (Back of Specific Heat
Worksheet)
Lab Data Sheet (copy this down)
Formula
Quantity
m
Mass (g)
Ti
Initial Temperature (Celsius)
Tf
Final Temperature (Celsius)
c
Specific Heat (J/gᵒC)
Water
4.18
Formula:
cmo =
cwmw(Tf-Tiw)
mmo(Tf – Timo)
Mystery Object
Part 2 of Worksheet
Calculating Equilibrium Temperature:
Tf =
m1c1T1 + m2c2T2
m1c1 + m2c2
Tf =
c1T1 + c2T2
c1 + c 2
Use this one
if the masses
are different.
Use this one
if the masses
are the same.
***The numbers 1 and 2 refer to substance 1 and substance 2.