Given the following equation: 4Al2O3 + 9Fe → 3Fe3O4 + 8Al If 25.4g of Al2O3 is reacted with 10.2g of Fe, what is the limiting reactant?

Which suspect most likely committed the robbery and how do you know

Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.

State one important difference between a physical change and a chemical change?