Answer: The partial pressure of gas number 3 is 159 mmHg
Explanation:
Dalton's law of partial pressure states that the total pressure of the system is equal to the sum of partial pressure of each component present in it.
To calculate the partial pressure of gas number 3, we use the law given by Dalton, which is:
[tex]P_T=p_{1}+p_{2}+p_3[/tex]
We are given:
Total pressure of the tank, [tex]P_T[/tex] = 950 mmHg
Vapor pressure of gas number 1, [tex]p_{1}[/tex] = 335 mmHg
Vapor pressure of gas number 2, [tex]p_{2}[/tex] = 456 mmHg
Putting values in above equation, we get:
[tex]950=335+456+p_3\\\\p_{3}=[950-(335+456)]=159mmHg[/tex]
Hence, the partial pressure of gas number 3 is 159 mmHg
