17. The florist industry is a big business. The producers of flowers are constantly looking for ways to increase and improve the flowering capacity of the plants
they raise and sell. A grower put together a special blend of fertilizers and
plant nutrients in hopes of increasing his blossom yield. He tested different
concentrations of this special blend on flowering plants to see which
concentration would produce the greatest number of blossoms per plant.
a. What is the independent variable?
b. What is the dependent variable?
c. List three possible constants.
d. What would the control in this experiment?

Idon't know hope someone you

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.