Let's address the question:
2. How many times more carbon dioxide is there in the exhaled air compared to the inhaled air? (1)
To determine how many times more carbon dioxide is present in the exhaled air compared to the inhaled air, follow these steps:
1. Identify the percentage of carbon dioxide in inhaled air and exhaled air from the table:
- Inhaled air carbon dioxide: 0.04%
- Exhaled air carbon dioxide: 4%
2. Convert these percentages into a comparable metric if necessary:
- Inhaled air: 0.04% (can be left as is for this calculation)
- Exhaled air: 4% (can be left as is for this calculation)
3. Set up the ratio to find how many times more CO₂ is in the exhaled air compared to the inhaled air:
- [tex]\[
\text{Times more CO₂} = \frac{\text{Percentage of CO₂ in exhaled air}}{\text{Percentage of CO₂ in inhaled air}}
\][/tex]
4. Calculate the ratio using the given percentages:
- [tex]\[
\text{Times more CO₂} = \frac{4}{0.04}
\][/tex]
5. Perform the division:
- [tex]\[
\frac{4}{0.04} = 100
\][/tex]
Thus, the exhaled air contains 100 times more carbon dioxide than the inhaled air.
