When the Air in a Testing Chamber Is Specially Mixed

question 16

Multiple Choice

When the air in a testing chamber is specially mixed so that its oxygen content is 10 percent and its overall air pressure is 400 mm Hg, then PO2 is ________.

• A) 400 mm Hg
• B) 82 mm Hg
• C) 40 mm Hg
• D) 21 mm Hg
• E) 4 mm Hg

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