an engineer measures the initial depth of liquid in a reactor vessel as 3.29 m and the final depth as 1.0487 m. what is the diffrence in depth?

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

List four observations that indicate that a chemical reaction may be taking place

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?