My mom has passed out twice for about a minute. She gets up and is fine. Is this normal?

Passing out is never normal. You should have her see a doctor. Could be a BP problem.

I agree, call her doctor.

This is a medical question and should be taken up with her doctor. A minute is a long time to be unconscious for no apparent reason. Maybe she has gotten up too fast? Recently started new meds? She may be deficient in some vitamins or minerals and her doctor should check those. In any case, since her episodes are unpredictable, she shouldn’t be left alone when she is getting up.