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Sagot :
Answer:
267 mmHg.
Explanation:
What is given?
Total pressure = 723 mmHg
Partial pressure of helium (He) = 194 mmHg.
Partial pressure of nitrogen (N) = 262 mmHg.
Step-by-step solution:
Let's see the formula of total pressure:
[tex]P_{TOTAL}=P_1+P_2+...[/tex]Let's write the formula to our context if we have 3 different gases:
[tex]P_{TOTAL}=P_{He}+P_{Ni}+P_O.[/tex]We want to find the partial pressure of oxygen (O), so let's solve for Po which is the unknown value in the formula, and replace the given data:
[tex]\begin{gathered} P_O=P_{TOTAL}-P_{He}-P_N \\ P_O=723\text{ mmHg-194 mmHg-262mmHg,} \\ P_O=267\text{ mmHg.} \end{gathered}[/tex]The partial pressure of oxygen is 267 mmHg.
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