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Describe the difference between ionic bonds and polar covalent bonds.

Calculate the solubility, S, (in units of molarity, M) of Q2SO4, given the solubility product constant, Ksp = {K}.  (Q is not a real element.) Answer format: Enter your answer in standard, not scientific, notation using 2 sig figs.

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.