A mole of CO2 = 2 moles of O2
8 CO moles x 2 =
16 moles
It is correct, next time re-check your answer and don't second guess yourself. ;3
Condenser Lens - This lens system is located immediately under the stage and focuses the light on the specimen.
Reaction:

Magnesium is a stronger reducing agent than copper and is thus able to reduce copper(II) oxide.
Products of the reaction: Magnesium oxide and metallic copper.