Chromebooks are not the same as a laptop running Windows (or even a Mac). Chromebooks use Chrome OS which is basically a browser not a "true" operating system like Windows (or Mac OS). You cannot install any software on it and which means you cannot install MS Office (or Libre Office) on it. You cannot even install printer drivers on a Chromebook since it uses the internet to print. That means a networked printer is required to print from a Chromebook.
The standard office suite for Chromebooks is Google Docs. But there is also Microsoft's Office Online that can be used with a Chromebook. It is a mostly free app for you to use, but I do not know any specifics.
There are multiple Asus Chromebooks with an Intel CPU so no specific specs...