A white precipitate is present in a test tube, but the test tube is not labeled. It could be AgCl or Bi(OH)_3 What reagent could you add to the solid to determine what it is? Describe what will happen to the precipitate when the reagent is added if it is AgCl and what will happen if it is Bi(OH)_3.

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.

answer:

the reaction is type of combination reaction.

explanation:

on the product side, there are 2 molecules of bonded to fe   which means one atom of fe are combined two molecules of . so, balanced chemical equation becomes :

this reaction follows the reaction type of combination reaction. a combination reaction is defined as chemical reaction in which reactants combines together to form a single product.

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