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 done the table: | | o₂ | n₂ | co₂ | |---|---|---|---| | inhaled | 20.94% | 78.12% | 0.03% | | exhaled | 16.37% | 78.15% | 4.46% |

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 = \(500\times\frac{20.94}{100}\) = \(500\times0.2094 = 104.7\) mL.

Step2: Calculate oxygen exhaled

Volume of air exhaled is 500 mL, and percentage of \(O_2\) exhaled is 16.37%. So, amount of \(O_2\) exhaled = \(500\times\frac{16.37}{100}\) = \(500\times0.1637 = 81.85\) mL.

Step3: Find the difference

Difference = Inhaled \(O_2\) - Exhaled \(O_2\) = \(104.7 - 81.85 = 22.85\) mL.

Answer:

22.85 mL of oxygen