Answer:
The volume is 85.34L.
Step-by-step explanation:
1st) To calculate the volume, we can use the Boyle's Law:

The given information in the exercise is:
- V1: 46.5L
- P1: 16.7kPa
- P2: 9.1kPa
- V2: this is what we have to calculate.
2nd) Replacing the values in the formula:

So, the volume of the ammonia is 85.34L.