Hf3P2 what is that compound

A) the enthralling of formation for pure element in its standard state is always positivehope this : )

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !