5. You have been asked to monitor the daily fluctuations in atmospheric ozone in the downtown
area of a city to determine if there is relationship
between daily traffic patterns and ozone levels. (a)
Which of the following sampling plan will you use:
random, systematic, judgmental, systematic–
judgmental, or stratified? (b) Do you plan to collect
and analyze a series of grab samples, or will you
form a single composite sample? (c) Will your
answers to these questions change if your goal is to
determine if the average daily ozone level exceeds a
threshold value? If your answer is yes, then what is
your new sampling strategy?
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Answerthis solution will not form a precipitateexplanationsolubility equilbrium:         pbf₂(s)  ⇄ pb²⁺(aq) + 2 f⁻(aq)the solubility product expression is    (we exclude solids from the equilibrium expression).now suppose we have the trial ion product q, which we can define as    then, we can interpret  q as the product of the concentration of the ions that we have and ksp as the product of the ion concentrations that are needed to form a saturated solution.if q > ksp, then that implies that there will be a surplus of ions that exceed the amount that is required to form a saturated solution. a precipitate will then form (the precipitate continually  forms until the surplus ions are removed and q is decreased to ksp's value).if q = ksp, the saturated solution that forms is barely saturated and the precipitate will be minimal.if q < ksp, then the ion concentration will not be enough to form a saturated solution (so no precipitate).using our information, we calculate the trial ion product:     since q = 2.7  × 10⁻⁸ < ksp =  4  ×  10⁻⁸, a precipitate will not form.

Answerspecies;

The answer is false because: gravitational force is independent of medium and depends only on the masses of the two objects and the distance between them

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