Can I use my old magsafe power adapter?

I just bought MacBook Air, because my MacBook Pro died... I need two magsafe power adapters (for work and home) and I was wondering whether I could use my old ones from my MacBook Pro? The watt is way off, though (85 W versus 45W). Any experiences?
Thank you,
Andrea

Yes, you can use the adapter of a higher wattage. 
http://support.apple.com/kb/HT2346

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