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# Gas Info

### AP Chem Gas Study Info

Mass (in grams) of gas w=nM or w=dV
Variations of Ideal Gas Law PV=(w/M)RT or PV=(d/M)RT
SI version of Gas Constant R (Pa*m3 -> J/molK) 8.3145
When collecting a gas over a liquid P[gas]=P[total] - P[liquid]
STP version of Gas Constant R (L*atm/molK) 0.0821
Ideal Gas Law PV=nRT
Standard Molar Volume 22.414 L
Avogadro's Hypothesis equal volumes of gases under the same conditions of temperature and pressure contain the same number of molecules
Density Equation D=m/V
Charle's Law constant pressure
Density varies inversely to volume D1V1=D2V2
Boyle's Law constant temperature
Standard Pressure 1 atm 101,325 Pa 760 torr about 1 bar
Pressure in Pascals P[Pa]= force[N]/area[m2]
Pressure exerted by a column of fluid P=height*density*9.81
Dalton's law of Partial Pressures the sum of the pressures of the gases in a mixture is the total pressure exerted
Changes in density with temperature and pressure D2=D1V1/V2 or D2=(P2/P1)(T1/T2)
Guy-Lussac's Law constant volume
Created by: BlackPromises