Answer:
the gas does no work.
Explanation:
An isochoric process is a process in which the volume of a gas is kept constant.
The work done by a gas during a transformation is given by:
[tex]W=p\Delta V[/tex]
where
p is the gas pressure
[tex]\Delta V[/tex] is the change in volume of the gas
For an isochoric process, the volume of the gas does not change, so
[tex]\Delta V[/tex]
and so, according to the previous equation, the work done by the gas is zero:
W = 0