Answer:
0.1667
Explanation:
Hello,
Dalton's law defines:
[tex]y_i=\frac{P_i}{P_T}[/tex]
A total pressure is:
[tex]P_T=P_A+P_B[/tex]
So, for A (solving for [tex]P_A[/tex] in the previous equation, we get:
[tex]y_A=\frac{P_A}{P_A+P_B}[/tex]
Since [tex]P_A=0.2P_B[/tex], we obtain:
[tex]y_A=\frac{P_A}{P_A+P_A/0.2}\\y_A=\frac{1}{6}\\y_A=0.1667[/tex]}
Best regards.
