The final volume is 4.0 liters.
We can calculate the final volume with Boyle's law:
[tex] P_{i}V_{i} = P_{f}V_{f} [/tex] (1)
Where:
[tex] P_{i}[/tex]: is the initial pressure = 100 kPa
[tex] V_{i}[/tex]: is the initial volume = 1.0 L
[tex]P_{f}[/tex]: is the final pressure = 25 kPa
[tex]V_{f}[/tex]: is the final volume =?
Hence, the final volume is:
[tex] V_{f} = \frac{P_{i}V_{i}}{P_{f}} = \frac{100 kPa*1.0 L}{25 kPa} = 4.0 L [/tex]
Therefore, the final volume is 4.0 liters.
You can learn more about Boyle's law here: https://brainly.com/question/21184611?referrer=searchResults
I hope it helps you!