Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Earlymon beat me to it.
You will not be able to install Linux natively on an Android tablet because of bootloader restrictions but since Android uses a Linux kernel, it is possible to run Ubuntu in a chroot environment and the file (which the loop device treats as a file system) can be stored on any device accessible to Android.
The OS runs fine but normally you can only access the GUI using VNC and VNC is horribly slow so don't expect it to fly.