The molality of a solution that is made by dissolving a certain mass of ethanol in 85.4 g of water is 0.950 m. how many moles of ethanol were dissolved? use mc028-1.jpg. 0.0811 mol 0.0899 mol 11.1 mol 81.1 mol

Part of molten rock at mid-ocean ridges

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.

Is of of 3- ? a. 1--3- b. 1--2- c. 1--3- d. of