Definitions

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F*d
Potential energy
Energy that is stored
~PE= m*g*h
Thermal equillibrium
Temperature is the same and no further heat transfer occurs
Kinetic Energy
the energy of motion
~KE= 1/2 mu^2
Law of conservation of energy
Energy cannot be created nor destroyed
Electrostatic potential energy continued
=Q1*Q2/distance
~where Q= energy
Electrostatic Potential Energy
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isolated system
Doesn’t exchange energy or matter with the surroundings
Closed system
Exchanges energy but not matter with the surroundings
open system
exchanges both energy and matter with the surroungings
Exothermix
Gives off heat/energy
q<0
will be negative
Endothermic
Takes in heat/energy
q>0
will be positive
Delta Energy
1)Efinal-Einitial
2)q+w
3)q+ (-PdeltaV)
4)q-PdevltaV
Energy
Joule
heat
q
Ideal Gas Law
PV=nRT
Enthalpy Change (Delta H)
1)qsubp
2)DeltaE + PdeltaV
Enthalpy
E+PV
Molar Heat Capacity
1)q=mcsubpdeltaT
Specific Heat
q=mcsubsdeltaT
~energy gained or lost from a system
Molar heat of fusion
q=nDeltaHfusion
Molar heat of vaporization
q=nDeltaHvaporization
Total heat
qtot=qsub1+qsub2+qsub3…etc
Csubs water
4.184 Joules/g*degreescelcius
DeltaHrxn
deltaHrxn of products – DeltaHrxn of reactants
Hess’s Law
DeltaH1+DeltaH2=DeltaH3
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