What is the idea number links per web 2.0?

I have a web 2.0 with 5 unique articles each/500 words. How many articles should I place a link back to money site, and number of internal link and outbound link to authority site each article and overall website?

You need only place your link in one article and let the rest serve as filler articles. However, you can place your link in more articles, but not in all.

What is the number I should place? How many outbound/inbound link per article is good?

I would only paste one link per site to your money site. And then I would post most of the T2 links at that particular post, rather than the web 2.0 homepage. Still build links to the web 2.0 homepage, but build most T2 links to the T1 post with the link to money site.

You could use one or two of the other posts to link to authority sites, but I wouldn't link a second post on the same web 2.0 to the money site.

Matt Cutts says you should put 4 links on every web 2.0 you create