Comparison of hydrogen spectrum vs. helium spectrum. explain the following observations: (1) helium exhibits more visible emission lines than hydrogen; and (2) the emission wavelengths for helium and hydrogen are different. consider the following terms when writing this section: shielding, splitting degeneracies, s-orbital, p-orbital, spin, singlet, triplet, electronic transition.

How can you use chemical equations to predict the products of the reaction you can carry out?

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.

Which of the following units is not an official si unit