User talk:Yguo2

Your recent edits
Hi there. In case you didn't know, when you add content to talk pages and Wikipedia pages that have open discussion, you should sign your posts by typing four tildes ( &#126;&#126;&#126;&#126; ) at the end of your comment. If you can't type the tilde character, you should click on the signature button located above the edit window. This will automatically insert a signature with your name and the time you posted the comment. This information is useful because other editors will be able to tell who said what, and when. Thank you! --SineBot (talk) 21:41, 3 May 2009 (UTC)

Portal talk:Chemistry
I showed you how to solve the question, but I didn't actually solve it. Hope this helps. 24.186.165.121 (talk) 19:57, 6 May 2009 (UTC)