Energy in ipos
Energy out neg WORK on systems ous.
work by systemineg * If heat is transferred from enviro to a system, what happens to the thermal energy
Increases if no work is done on the system If work is done by the sus can increase, decrease Don't forget about the age old question of What is it called when you have multiple partners in a relationship?
OR stay the same Absolute Temp: Coldest possible temp, temp @ which Volume of Ideal 903=0 and where pressure=0.
Don't forget about the age old question of What are the vertebrae in the neck region called?
ing pt: 1000c, 273K
both depend on
Thermal Equilibrium: no energy is transferred casheat and two objects are at the same temp Oo Lwill only have same energy if identical systems Brod law of Thermodynamics
Don't forget about the age old question of Do multicellular bacteria exist?
Ly entropy increases as you go from solid liquido gas ZeRoth law of thermodynamics
4 if A=B and B=C Then A=e Heat flows from not to cold Heat Engines -transform thermal energy from a hot Resorvoir to a cold Resorvoir -operates in cycle so change in thermal energy is Zero
EW If you want to learn more check out What are the three areas in semiotics?
Heat Engine efficienu:
t = Wout = QH - Qc = 11-Qe
- Cannut be 100% Max efficiency: use temp?
T-TC n celyn We also discuss several other topics like What are the different strong acids?
Heat Pumps - Reverse of heat engine - found in Refigerators + air conditioners Don't forget about the age old question of What does federalism offer as disadvantages?
QH = Win + Qc a Win=QH-Qc
- has a coefficient of performance
what you get What you had to
For heating: SCOP = QH = QH
For Corlingo copero de opt ac
Violates heat flow ifs,
a heat flows from cold to hoh b. same heat engine is loos efficient
Entropy -measure of disorder in the susten. -irreversibles Regukes LDIR po Cerven to uoginal state
I a. energy transforemation to thermal energy if it requires usreke, it is irreversibles in an isolated system, entropy never decreases
Swill either incidide to equilib or stay same Pressure - force exerted on a Sueface dunded by area of the Surface
- 1 atm= 1.013 x 105 Pa
Ideal Gas law PV=NRT n=mores
Average translational kinetic
by karang = 2 kg T Average speed: Vems: 3KST Aless massive molecules hove higher Veys then Massive ones
The Gas Laws 1. AS Volume time between collisions , so
force and pressure a 2. As temp & molecules more faster & Strike wallows
more force so pressure 3. More molecules means more frequent collisions
t greater average force and pressure 4. If molecules move faster to keep pressure same must be more time between collisions
so volume ť
Thermal energy of Ideal gases - Eth= 7 PV = 3/2nRT
area under curve is work done by I the system
-if V increases work is positive - If y decieases, work is negative constant pressure: isobari
bwork done by system equals pressure timasA V Waas= PAV-area under curve
A&h= QtW=Q-PAV so
constant Volume: Sechura
by no work done ДЕw = (a
Constant temp: isothermal
- higher I
Adi bate process -no heat flow in or out of system
Q=0 So 1&h=W it work is done on system, Aeth
if work is done by system, Ant
Expansion: Eth and TV Compression : AEth1 and T Î Phave changer
Energy added during change of State ques into -breakina bonds between monewies So next phase
can occur -PE changes but ke stays same
3) Study Soup
Heat of transpremation : Q=ML!
Sused in cooling + y vapuranin
a heat of Vaporizohon Rises as temp decreases