From Apple's requirements:
https://support.apple.com/en-us/HT201475
It sounds like OSX 10.10 Yosemite will run on a MacBook late 2008 or newer so if this is a 2011 model you should be good to go. Apples technical specs don't list a 2011 model but there is a 2010:
https://support.apple.com/kb/SP584?viewlocale=en_US&locale=en_US
which came with a 2.4GHz Intel Core 2 Duo and 2GB RAM, so that seem to match your friend's laptop. The spec sheet also says 4GB is the limit on RAM. According to Other World Computing's memory upgrade page certain models can go up to 6GB RAM:
http://eshop.macsales.com/shop/memory/MacBook/DDR2/
Only way to know for sure is to check the model identifier in About This Mac. On OSX 10.6 you would choose About This Mac under the Apple menu and in the resulting dialog you action the More Info… button. That takes you to a detailed list of everything about that machine. In the left nav it should default to picking "Hardware" and in the right pane there should be a "Hardware Overview". The second item on that list should be the Model Identifier. If my guess is correct, it should say "MacBook 7,1" If that is the case, this site says some folks have actually found it will use up to 8GB under OSX 10.6 and 16GB under OSX 10.7 or later with the latest EFI updates:
http://www.everymac.com/systems/apple/macbook/specs/macbook-core-2-duo-2.4-white-13-polycarbonate-unibody-mid-2010-specs.html

CB

On 8/15/15 9:52 PM, Sunshine wrote:
From what my friend can tell it looks like a 2011 macbook white polly carbon they are having trouble getting into the overview part of the about this mac if this helps it has a built in super drive
how much memory can a macbook be fully upgraded to?
Meanning 8 gigs is this the fullest amount a macbook can take? or can it go higher?
On 8/15/2015 8:18 PM, Shawn Krasniuk wrote:
What year is the Mac that they have? Yosemite and El Capitan run on 2009 or new model Macs. Also, it wouldn't hurt to upgrade the ram. I have 4 GB of ram in this thing and it ran perfect with Yosemite. It may not be necessary but who knows how slow the Mac will run with only 2 GB of ram. HTH.

Shawn
Sent From My White MacBook
Facebook Username: Shawn Krasniuk
Twitter Handle: shawnk_aka_bbs
Skype username: bbstheblindrapper
Facetime: bbssh...@icloud.com

On Aug 15, 2015, at 6:03 PM, Sunshine <sunsh...@abe.midco.net> wrote:

a friend wanted me to ask what are the requirements for using osx 10.10 the latest version of osx they have a macbook running snow leppard 10.63 2 gigs of ddr3 ram and an intell core 2 duo processer that is running 2.4 ghz. Would they need to up the ram to be able to handel the osx 10.10 and then possibly the osx 10.11 when it is released?

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