how does activity explain the differences in the observed solubility of Ca(IO3)2 into each of these solvents

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

Why are the trends and exceptions to the trends in ionization energy observed?

In the following redox reaction which is the oxidizing agent and which is the reducing agent? alcl3 + na nacl + al