Select all the correct answers. Which equations represent precipitation reactions? (There is more than one correct answer)

Na2S + FeBr2 → 2NaBr + FeS

MgSO4 + CaCl2 → MgCl2 + CaSO4

LiOH + NH4I → LiI + NH4OH

2NaCl + K2S → Na2S + 2KCl

AgNO3 + NaCl → AgCl + NaNO3

In a reaction equation, where are the products located? a.) above the arrow b.) to the right of the arrow c.) to the left of the arrow d.) below the arrow

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To find the work done, the force exerted and distance moved are multiplied. a couch is moved twice before you are happy with its placement. the same force was used to move the couch both times. if more work is done the first time it is moved, what do you know about the distance it was moved? a) when more work was done, the couch was moved the same distance. b) when more work was done, the couch was moved less. c) when more work was done, the couch was moved further. d) when more work was done, the couch wasn't moved at all.