To solve this problem, you would use Boyle's Law.
Boyle’s Law states that the pressure of a gas is inversely proportional to its volume when the temperature and the amount of gas are held constant. The formula is given by:
\[ P_1 \times V_1 = P_2 \times V_2 \]
Where:
- \( P_1 \) is the initial pressure,
- \( V_1 \) is the initial volume,
- \( P_2 \) is the final pressure, and
- \( V_2 \) is the final volume.
In this case:
- \( P_1 = 1.02 , \text{atm} \)
- \( V_1 = 2.7 , \text{L} \)
- \( V_2 = 3.2 , \text{L} \)
You can rearrange the equation to solve for \( P_2 \):
\[ P_2 = \frac{P_1 \times V_1}{V_2} \]
Now you can substitute the values:
\[ P_2 = \frac{1.02 , \text{atm} \times 2.7 , \text{L}}{3.2 , \text{L}} \]
Calculating this gives:
\[ P_2 = \frac{2.754 , \text{atm \cdot L}}{3.2 , \text{L}} \] \[ P_2 \approx 0.859375 , \text{atm} \]
So the new pressure in her lungs when she increases the volume to 3.2 L is approximately 0.86 atm.