Consider RbOH → Rb+ + OH- and the following information.
AHlat = -765.01 kJ/mol
AHhydr of Rb+ = -315.2 kJ/mol
AHhydr of OH-=-532.7 kJ/mol
What is the AHsol rounded to the correct number of significant figures? Use A H sol = -A Hat + AHhydr-
-1.612.91 kJ/mol
-1,612.9 kJ/mol
-82.9 kJ/mol
-82.89 kJ/mol

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.