Write the empirical formula for c2h6o2

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

Describe the interaction that occurs between two objects with the same electrical charge.

What is the compound name for the formula [ru(en)2cl2]2+ and [co(en)cl2br]-