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Glossary of PCAT Gas Phase

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gas pressures
1 atm =
760 mmHg =
760 torr
Boyle's Law
PV = k
or
P1V1 = P2V2
Charles' Law
V1/T1 = V2/T2
Temperature Conversion
Tk = Tc + 273.15
Avogadro's Principle
n1/V1 = n2/V2
Ideal Gas Law
PV = nRT

R = 8.21E-2 L*atm/(mol*K)
Density
d =
m/v
Dalton's Law of Partial Pressures
P(A) =
P(T)X(A)
where
X(A) =
n(A) / n(T)
average kinetic energy
KE =
3/2kT
Graham's Law of diffusion and effusion
r1 / r2 =
[(MM2) / (MM1)]^1/2

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