The table shows a chemical equation and the dimensional analysis used by a student to calculate the number of moles of ba3n2 required to produce 9.2 moles of ba(oh)2. student's dimensional analysis chemical equation dimensional analysis ba3n2 + 6h2o → 3ba(oh)2 + 2nh3 9.2 mol of ba(oh)2 x 3 mol of ba(oh)2 / 1 mol of ba3n2 what is the error in the dimensional analysis? (1 point) a 1 mol of ba3n2 should be replaced with 3 mol of ba3n2 b 3 mol of ba(oh)2 should be replaced with 1 mol of ba(oh)2 c 3 mol of ba(oh)2 and 1 mol of ba3n2 should be interchanged d 9.2 mol of ba(oh)2 and 1 mol of ba3n2 should be interchanged

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.