What volume of a 0.22 m silver nitrate solution is required to precipitate all the cl− ion in the solution as agcl?

law of conservation of matter

the density(ratio between mass and volume as m/v) decreases from top to bottom in periodic table group as the size increases and nuclear charge decreases. but in periods density increases from left to right as atom size decreases and nuclear charge increases.

a corroding iron, if that's one of your choices