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Calculate the value of Ka, the acid dissociation constant, for HF using the following equilibrium conditions at temperature, T. [HF]eq = {HF} M [H+]eq = [F-]eq = 0.0025 M Answer format:  Do not use scientific notation.  Use standard notation with a decimal point.  Your answer should have 2 sig figs.

Which of the mixtures below will cause Ag2SO4(s) to precipitate?  Ksp = 1.5 x 10-5

Why would ionic solids have a relatively high melting point?

Describe (not list) two differences between metallic solids and molecular solids.  

What, if any, is the effect on the solubility of M2SO4 when NaSO4 is added to the mixture?  (M is not a real element)

Suppose 100 mL 0.20 M of the weak acid, HA, is being titrated by 0.20 M NaOH.   At what point during the titration would the equation below be the most useful to calculate the pH of the solution?   pH = pKa + log([base]/[acid])

Which of the following microorganisms have/are prokaryotic cells?

Pour les questions 6 à 10, tu dois transformer les phrases. (maison): Ton ami et toi – C’est ____________ maison.

Which of the following statements best describes the role of recreation in individuals’ lives

Who was the first to view little cells or boxes with compound microscope?