What volumes of 1.50 M stock solution and distilled water are required to prepare 12.0 mL of each of the following standard solutions: standard stock solution distilled water
solution (M)
(mL)
0.19
(mL)
0.38
0.56
0.75
0.94
1.13
1.31
1.50
Assuming no spillage, what mass of ammonium sulfate will you need to prepare all of the standards?

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.