A student is wearing a ring made out of pure copper. If the student accidentally dropped the ring into a beaker of solution, which solution(s) would react with the ring?

The variability in marine salinity between habitats does not impact the fish living there. select the best answer from the choices provided t f

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

What was bohr’s contribution to the planetary model