Answer: The partial pressure of oxygen in the mixture is 321 mm Hg
Explanation:
According to Dalton's law, the total pressure is the sum of individual pressures.
[tex]p_{total}=p_{He}+p_{N_2}+p_{O_2}[/tex]
Given : [tex]p_{total}[/tex] = total pressure of gases = 752 mm Hg
[tex]p_{He}[/tex] = partial pressure of Helium = 234 mm Hg
[tex]p_{N_2}[/tex] = partial pressure of nitrogen = 197 mm Hg
[tex]p_{O_2}[/tex] = partial pressure of oxygen = ?
Putting in the values we get:
[tex]752mmHg=234mmHg+197mmHg+p_{O_2}[/tex]
[tex]p_{O_2}=321mmHg[/tex]
The partial pressure of oxygen in the mixture is 321 mm Hg
