Sodium and chlorine react and an ionic bond forms. which statement is true about the bonding that has occurred? a. the sodium atom has lost an electron and the chlorine atom has gained one. b. the sodium and the chlorine atoms have both gained an electron. c. the sodium and the chlorine atoms have both lost an electron. d. the chlorine atom has lost an electron and the sodium atom has gained one.

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.