the ph of a naoh solution decreased after long time exposure to air. what component of the atmosphere probably reacted with the solution

After cloud droplets form, what must happen to them for precipitation to occur?

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?