Acetic propionic anhydride, C5H8O3
o o
/ \/ \/
|| ||
o o
Ref. Pubchem
Note: next time, please post chemistry questions in appropriate section.
Answer:
3rd option.) 1/8a^12
Step-by-step explanation:
(2a⁴)^-3
=1/(2a⁴)³
=1/8a^12
2 to the second power times 7 to the seventh power