"Excuse me,could u pass that newspapers to me?"
-->If there are many types of publications sitting on the table, then you could use the plural form.
"Excuse me,could u pass that newspaper to me?"
--> If you are referring to a publication on folded sheets, use sigular form.
"Pass that newpaper to me" means the destination of the newspaper will be at my hands, whereas "pass that newpaper for me" means the papers will travel short distance to someone, and this someone will get the papers.