Question

the table shows data about the percentages of gases in air inhaled and exhaled. the gases are oxygen (o₂), nitrogen (n₂), and carbon dioxide (co₂).
assume the volume of air inhaled and exhaled is 500 ml. calculate the difference (in ml) between the amount of oxygen inhaled and the amount of oxygen exhaled.
22.85 ml of oxygen
4.57 ml of oxygen
104.7 ml of oxygen
81.85 ml of oxygen
complete

	o₂	n₂	co₂
inhaled	20.94%	78.12%	0.03%
exhaled	16.37%	78.15%	4.46%

which of these conclusions can be made from the data in the table?
☐ cellular respiration produces nitrogen.
☐ cellular respiration uses oxygen.
☐ cellular respiration produces carbon dioxide.
☐ photosynthesis produces oxygen.
done

Explanation:

Step1: Calculate oxygen inhaled

Volume of air inhaled is 500 mL, and percentage of \(O_2\) inhaled is 20.94%. So amount of \(O_2\) inhaled is \(500\times\frac{20.94}{100}= 500\times0.2094 = 104.7\) mL.

Step2: Calculate oxygen exhaled

Percentage of \(O_2\) exhaled is 16.37%. So amount of \(O_2\) exhaled is \(500\times\frac{16.37}{100}=500\times0.1637 = 81.85\) mL.

Step3: Calculate the difference

Subtract the amount of \(O_2\) exhaled from inhaled: \(104.7 - 81.85 = 22.85\) mL.

Answer:

22.85 mL