Aweak acid placed in water contains

a. the same number of unionized acid molecules as a strong acid in water.
b. no unionized acid molecules.
c. a lower concentration of unionized acid molecules than a strong acid in water.
d. a higher concentration of unionized acid molecules than a stronger acid in water

Which statement describes both homogeneous mixtures and heterogeneous mixtures?

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.

How many moles of oxygen react with 12 moles of aluminum