Calculate the equilibrium constant for 2NO(g) + O2(g) + 2NO2(g) when given: [NO] = 0.106M, [O2] = 0.122M, [NO2] = 0.129M Be sure to write the
expression and show your work.

Answer a b c and d for my chemistry hw

Write the chemical symbols for three different atoms or atomic cations with 27 electrons. asap!

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.