A sodium hydroxide solution is prepared by dissolving 4.0 g NaOH in 4.00 L of solution. What is the molar concentration of OH- in this solution? What are the pOH and the pH of the solution? What is the hydrogen ion concentration in this solution?

What is the typical rotational frequency frot for a molecule like n2 at room temperature (25∘c)? assume that d for this molecule is 1å=10−10m. take the total mass of an n2 molecule to be mn2=4.65×10−26kg. you will need to account for rotations around two axes (not just one) to find the correct frequency. express frot numerically in hertz, to three significant figures.