212k views
13 votes
What is the approximate percentage of oxygen in expired air?
A 0.04% B 4% C 16% D 21%

User Lei Hao
by
5.7k points

1 Answer

6 votes

Answer:

c: 16%

Step-by-step explanation:

experied oxygen is also exhaled o2

User Insilico
by
5.7k points