Please answer this question; 30.00 ml of a 0.01 M caustic potash solution, was completely neutralized by 25.00 ml of a sulfuric acid solution. What would be the amount of barium chloride required to quantitatively precipitate the sulfate in 100 ml of this sulfuric acid solution?(relative atomic masses Ba=137; K=39; Cl= 35.5; S=32; O=16; H=1)

Acompound has a molecular weight of 12.124 atomic mass units and the empirical formula c3h40. what is the molecular formula of the compound?

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.

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion