Answer:
The volume of the system will change and maybe the shape of the system boundary
Its most significant when all other forces are absent


= 2 × 23 + 2 × 52 + 2 × 16
= 182 grams
1 mole of
weighs = 182 g
8 moles weigh = 8× 182
=
or

The answer has to be either CO2 or mg. But i am not sure which one