Answer:
76 mmHg is the partial pressure of oxygen on this new planet.
Explanation:
Atmospheric pressure on air on earth = 760 mmHg
On an unknown planet :
Oxygen makes up 10% of the atmosphere.
The mole fraction of oxygen gas can be written as = [tex]\chi_1=\frac{10}{100}=0.1[/tex]
Carbon dioxide makes up 15% of the atmosphere.
The mole fraction of carbon dioxide gas can be written as = [tex]\chi_2=\frac{15}{100}=0.15[/tex]
Nitrogen makes up the remaining 75% of the atmosphere.
The mole fraction of nitrogen gas can be written as = [tex]\chi_1=\frac{75}{100}=0.75[/tex]
Atmospheric pressure of air on unknown planet,p= 760 mmHg (given)
Partial pressure of gases can be calculated by the help o Dalton's law of partial pressure:
Partial pressure of oxygen gas :
[tex]p_1=p\times \chi_1[/tex]
[tex]p_1=760 mmHg\times 0.1=76 mmHg[/tex]
Partial pressure of carbon dioxide gas :
[tex]p_2=p\times \chi_2[/tex]
[tex]p_2=760 mmHg\times 0.15=114 mmHg[/tex]
Partial pressure of nitrogen gas :
[tex]p_3=p\times \chi_3[/tex]
[tex]p_3=760 mmHg\times 0.75=570 mmHg[/tex]