I have a MacBook Pro computer and I will be traveling abroad to Hong Kong for studies. The electric sockets and voltage are different than here in the US so I would have to use a converter but it is a big hassle carrying around a power converter everywhere I go... I'm hoping to find another solution. If I purchase a HK MacBook Pro power cord will it work with my computer which I purchased in the US?
Yes, the MagSafe power adapters support dual voltage (100-240V).
According to the specs on Amazon for the 85W version:
So long as the local input provides power in that range, you'll be able to get a local MagSafe compatible cord and your US MBP will be fine.