Why are half-reactions used in redox reactions? A) They make it possible to neglect the electrons that are being transferred.
B) they make it easier to keep track of spectator ions
C) They make it easier to see the oxidation and reduction parts of the reactions separately.
d) They make balancing the number of atoms in the reaction unnecassary

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.