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2-Specific Heat

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| Themodynamics
Ther modynamics
reviou sly
we
all
conservartion of ereg.
treaded the
enhre
object
as
a Single particle
AK AU Wue
No
Consider enerqy om moton of partices
inside
object/sysTEm.
Temperature
T
-relakd to aerae
Kinetic Eneriy f particlec
Inside object/s ystem.
Common Temperatore Soales
Fahren heit:
32F Freeting Wales
212°F
Boiling Water
0°C Free 2ing Wader
J00C Boiling Water
Celsius
AT: 1°C |k|
233 K Freezig Nader
313 K Boilinq Waler
Kelvin:
All Scales measvre temp. egually well.
Convertina betuween temp. Scales
T
Te +32
Te(Tp-32)
Tk Tes + 23%.15
Averoqe KE VS
Tenp.
Celswy: Linear relationskip e tioer
Avg.KE Temp
tahrenheit: Linear relationskip
befeer Ar
KE TerMp
Kelvin: proçortiona) relationship
between Adg KETemp
Temp
At oC OF the particles stl hae KE
Absolute lero
0K
partices have No Kinetic Energy
-
As cold
as
t
Can
Possibly 3et
and Averoqe KE are
pro por tonal on Kelvn Scale
Temperatore
When in devbt,
Convert all temp to Relvin
Temp.
Temp
is relatà to ag. KE ef par tcles
One
One
method
to
add
Head
Q
of
change temperatore
emove
heat from 6y 5tem
[QJ Jovles
- Transfer
Heat
to
othermal enerq
natvr ally trarsers ftom high temp. To
to
temp. unhl
temp
Low
verythim 1
Jame temp
(Thermal Eguilibrium
Hea Enerqy enters Sys tem
Heat Ener 1 Leowes 5ystem
As
head trarslers
in
objecty
experenee the same
not all
AT
Change in temp eratore lAT) depends
-Amount
o
objets
on:
paricles
N:nvmber of particles
n:N.
ef moks
'n
NA
nUmber
mass
NC.02x10partee
- materi a
Speci ic het capaityc
o
Amount
temp.
henb
regvired
1 by
f
[ij
Amount
e
emp of
emp
[
reçuire to
heot
1 mole
Specihe Hest Capoaty Valae
by
1k
Notathon:
Molar Het
Cower
Case
Capaty: Capitalized
Constant pressure: C
lower Case
Constant velume.
molK
Change
on Pa7 of egvation
Molar Heat Capacity Valves on pg9
SpeciRc Hea Capocitg:
change
1k.
heat Capacit
Molar
to
P
,
eapitaliad V
of
qtio*
Speci Ac Hest Capacity
AT
Me
QmCAT
Note
Oan be
the sion
AT
positve of negahve,
Comes from AT
Tp -T
Cools douon
Tp T
So
wasms vp:
ATL0
40
Te7
heae leaues
AT>o
heo enters
In
an
insul ated
Container >
Qnt 0
Combine materiols A B in insvlated contai ner
O
QA+s ma Ca(T-Ta)tm,Glte-T
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