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What is the approximate percentage of oxygen in expired air?
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During exhalation, a mixture of gases is expired out that includes 16% oxygen, 4% carbon dioxide and 78% nitrogen. During Inhalation, the mixture of gases inhaled includes 21% oxygen, 0.04% carbon dioxide and 79% nitrogen.
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Question Text | What is the approximate percentage of oxygen in expired air? |
Topic | Gas exchange in humans |
Subject | Biology |
Class | Grade 9 |
Answer Type | Text solution:1 |
Upvotes | 95 |