Complete the paragraph to describe precipitation reactions.

Chemical precipitation occurs when a product is and precipitates out of a solution. By comparison, precipitation reactions require the reactants to be in the solvent.

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: i have one answer

acids are substances that ionize (break off) in an aqueous solution to produce hydrogen (h+) ions

explanation:

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