Gases

Question 0

Mole Fraction

Answer 0

y(A)=n(A)/n(t)
y(A): mole fraction of component A
n(A): #moles of A
n(t): #moles total

Question 1

Partial Pressure

Answer 1

P(A)=y(A)P(t)
P(A): partial pressure of component A of the mixture
y(A): mole fraction of A in the mixture
P(t): total pressure

Question 2

Moles

Answer 2

n(A)=weight(A)/MW(A)
n(A): #moles A
MW: molecular weight A

Question 3

Partial Volume

Answer 3

V(A)=y(A)V(t)
V(A): partial volume of mixture component A
y(A): mole fraction of A
V(t): total volume of mixture

Question 4

Temperature Scales

Answer 4

0C = 273K
0F = 460R
C = (F - 32) / 1.8

Question 5

Ideal Gas Law

Answer 5

PV = nRT

Pressure, Volume, #moles, constant (table look-up), Temperature

Question 6

psig psia

Answer 6

psia = psig + 14.7

Psia is an absolute scale while psig is relative to standard pressure (1 atm)

Question 7

Ideal Gas Law Shortcuts

Answer 7

P(1)V(1) = P(2)V(2)
P(1)V(1)T(2) = P(2)V(2)T(1)