Mercury is an environmental pollutant that is produced by the burning of fossil fuels and can be toxic to wildlife and humans. What does this show about the impact of chemicals on the environment? O A. People cannot control the negative effects of chemicals on the environment B. All chemicals that people introduce into the environment are harmful. C. The harm chemicals could have on the environment outweighs the benefits that people get from the chemicals. D. The beneficial effects people get from chemicals may have unintended harmful effects on the environment.

Hno3(aq) → h+(aq) + no3−(aq). picture ii best represents the strong acid hno3. strong acids are strong electrolytes

The answer is b because c don't explain why the moths are on them and it isn't a because as we know only one species of moth does this

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.