A mixture 20.4 g of P and 78.4 g Cl2 reacts completely to form PCl3 and PCl5 as the only products. Find the mass of PCl3 formed.

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

Calculate the number of molecules present in 0.750 mol of mgo.

This drawing shows a human body system. what is the primary function of this body system?