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31 Cards in this Set
 Front
 Back
Why are gases weiord?

invisible
low density ( 1000 * less dense) diffuse/expansion fill any container they are in volume is meaningless particals 1000 m/s 

pressure

force/ surface area


force in gases

collisions of particles against you/ container


surface area

where the container/ you is


atmosphere

1 atm typical day at sea level pressure of the atmosphere


Kinetic energy

gas is made of mostly space therefor it is easily compressed and can miz so readily
Gas molecules are always moving so the pressure of a gas is the effect of the molecules hitting the walls of the container No energy is formed of used in the movement of the molecules KE remains thesame if temperature and volume does not change Molecules have no attraction or rpulsion to one another 

measurements

760 mm HG = 1 atm = 76 cm Hg= 101.3 kPa


Boyles law

the volume of a sample of gas is inversely proportional to its presure if the temperature remains constant


equation for Boyles law

PV = K
P= pressure V= the volume of the sample K= a constant 

inverse relationships

PV = K inverse
V/P = K direct 

equations to inverse relationships

P1 V1 = P2 V2


Charles law

at a constant pressure the volume of a gas is directly proportional to its Kelvin temperature


absotlute zero

 273 so you must add 273 to the temperature is in Celsius


Charles law equation

V1 V2 or v
 =   = K T1 T2 T 

No name law

compares presssure and temperature


equation for no name law

P1 P2
 =  T1 T2 

Combined gas laws

P1 V1 = P2 V2
P1 V1 P2 V2  =  T1 T2 

Gas stoichiometry
What is the difference 
using volume
but volumes are meaningless 

molar volume

the size of 1 mole of any gas at STP is 22.4 liters


Golden Figure

1 mile gas6.02*10(23)particals
22.4 liter  1 GMM 

STP
mass to volume 
X g gi/ 1 m gi/ X m w/ 22.4 l w
 /GMM g gi/X m gi/ 1 m w 

STP
volume to mass 
X l gi/ 1 m gi/ X m w/ GMM g w
 /22.4 l gi/ X m gi/ 1 m w 

non STp
volume to mass 
balance equation
gas laws P1 V1 T1 constant =P2 V2 T2 stoich 

non STP
mass to volume 
balance equation
stoich gas laws P1 V1 T1 constant P2 V2 T2 

Another way
volume to mass 
PV= n RT
(p* cons)  (V)=(X)( 8.31) (T+273) (760) Stoich start in middle 

Another way
mass to volume 
PV= n RT
stoich for moles stop in middle ( P) (X )= (m stoi)(8.31)(T+273) 

Avogadro's Principle

equal volumes of gases at equal conditions contain equal numbers of particles


Changing conditions
Gas laws 
P1 V1 T1 P2 V2 T2
before after 

changing conditions
STP 
given M or V want M or v
chemical equations 

changing conditions
non STP 
same as STP with conditions given


changing conditions
ideal gas laws 
1 gas mentioned conditions given
no before and after 