Answer:

Explanation:
We have two pressures, two temperatures, and one volume.
This looks like a question in which we can use the Combined Gas Law to calculate the volume.

Data:

Calculation:

Explanation:
Let us assume that the value of
= 
Also at 1500 K,
= 

Relation between
and
is as follows.

Putting the given values into the above formula as follows.



Also, 
or, 
= 
= 
Thus, we can conclude that the value of
is
.
The answer for this question is 0.8