The valence electron ring is full. The ring has 8 electrons already.
Explanation:
2-metylbutene should be the profuct
88383838882828282829928282992928283838388383839292
Given:
ΔV = 5 - 1.48 L = 3.52 L = 0.00352 m³, th chane in volume
p = 0.818 atm = 0.819*101325 Pa = 82985.2 Pa
By definition, the work done is

Answer: 292.1 J