Debromination with Zinc?

[G1SG2]

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I've seen a few problems like this (couldn't find the mechanism anywhere online), but dont really remember how it goes. I know the Zinc is able to remove the Br from the alkane, but does that form a double bond? Or does that just reduce the alkane and replace the Br with a hydrogen? Any help with the products/mechanism would be helpful. Thanks.

 

[G1SG2]

Bump!

 

[thebillsfan]

I have no idea...I dont think that's one of the reactions we need to know. I would guess that it goes from haloalkane to alkane.