so i am on a Chromebook with headphones , and I am wondering if you can make it that a tab only play sound on one side of the headphones and other tabs to the other side of the headphones

No you cannot do that with a single pair of headphones. If you had an dual aux split... you could plug in two pairs of headphones... even if you had two bluetooth pairs I don't think it'd be possible... What do you need to do that for? Maybe I can help find an alternative solution

i was actually wondering the same thing but i've tried and i don't think you can. i think once you set it up then that's what it stays as. sorry ; -;