I want to disconnect all of my Google Chrome installations from my Google Account, since I have signed into Google Chrome on many computers, including some that I don't own (e.g., several school and library computers). Is there any way that I can find every Chrome installation that is connected to my Google Account, so that I disconnect every one of them from my Google Account, to prevent my passwords from being hijacked?
Assuming you have a gmail account you can click on the "last account activity details" link at the bottom right of your inbox. This will show all the locations you have logged in and allow you to close all sessions.
Change your password. That will stop most services using a traditional login. For applications with permissions to use the Google account, you can review and modify permissions for these at https://security.google.com/settings/security/permissions