If 17.50 grams of a barium sulfate precipitate are produced, find the number of moles of Barium Nitrate that
reacted.
CaSO4 (aq) + Ba(NO3)2 (aq) --> BaSO4 (s) + Ca(NO3)2

Calculate the number of molecules present in 0.750 mol of mgo.

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.

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?