It’s the same as when magnesium reacts with liquid water, only faster:
Mg + 2H₂O → MgO + H₂.
The difference is that in water, the reaction has a second step, converting MgO to Mg(OH)₂.
Answer:
it will be twice as large
I believe it's
4-floro-5,6,8-Tribromo-3,3,7-trimethylnonane
1-Double replacement
Explanation: