When the Air in a Testing Chamber Is Specially Mixed

question 36

Multiple Choice

When the air in a testing chamber is specially mixed so that its oxygen content is 10% 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.