Explain what a catalyst is and give an example of a transition as one.

The length of a vector arrow represents its magnitude and the point represents its direction true or false apex

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

What does a numerical subscript following an element in a chemical formula mean?