Which reaction is an example of heterogeneous catalysis? A. Ethene gas reacts with hydrogen gas by using a nickel catalyst.

B. Hydrogen peroxide decomposes by using an aqueous iodide ion catalyst.

C. Formic acid decomposes by using an acidic catalyst.

D. Sulfur dioxide gas is converted to suffer trioxide gas by using nitrogen chloride gas.

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.