Answer:
18.6 atm
Step-by-step explanation:
The new pressure can be found by using the formula for Boyle's law which is
![P_1V_1 = P_2V_2](https://img.qammunity.org/2022/formulas/chemistry/high-school/b2j7u98krsfgntpwf6j2qroq8um4t63weo.png)
where
P1 is the initial pressure
P2 is the final pressure
V1 is the initial volume
V2 is the final volume
Since we're finding the new pressure
![P_2 = (P_1V_1)/(V_2) \\](https://img.qammunity.org/2022/formulas/chemistry/high-school/ff34kmes3h49q826s4ouw3fiquw8d07p17.png)
We have
![P_2 = (105 * 11.5)/(65) = (1207.5)/(65) \\ = 18.5769](https://img.qammunity.org/2022/formulas/chemistry/high-school/30ocrtcugwxb4t25d9y8wfftohnx2holig.png)
We have the final answer as
18.6 atm
Hope this helps you