Arab cultures charted planets in the Dark Ages. Europeans helped establish the Sun-centered model of the solar system during the
1 answer:
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Answer:
c. carbon monoxide
Explanation:
no one bothers to read why anyways so look at the picture
12 times breathe give 240 ml of pure . Each breathe gives 20 ml of
.
Let us consider, volume of air per breathe= x ml.
Pure from inhaled air=
ml and Pure
from exhaled air=
ml.
Pure from inhaled and exhaled air= 20 ml
So, +
= 20
Therefore, x = 55.5 ml
So, volume of air per breath= 55.5 ml.