8. The theory of plate tectonics suggests that plates of the lithosphere are in motion driven by convection currents in the mantle. How does this motion support Newton's law of inertia? A The plates exert equal and opposite forces on each other.

B. The plates collide with a force which is dependent on their mass.

C. The plates accelerate in the direction of the force that is applied to them.

D. The plates continue to move until they encounter force from another plate

It will fall off and tip over. 

Maybe you should get some from your teacher and learn more so you can get your grades up and maybe study a bit more

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.

Answer: temperature? i hope this and have a wonderful