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Rank the following substances in order of increasing intermolecular forces: Ar, H2O, N2, O2

Which of the following substances can participate in hydrogen bonding?

When a solution of lead (II) nitrate is mixed with a solution of potassium chromate, a yellow precipitate forms according to the equation:  Pb(NO3)2(aq) + K2CrO4(aq) → 2 KNO3(aq) + PbCrO4(s)  What volume of 0.105 M lead (II) nitrate is required to react with 100.0 mL of 0.120 M potassium chromate?

When sodium hydroxide, NaOH, is dissolved in water, which species are present in addition to water?

If the pH of a blood sample is 7.60, what is the H3O+ concentration in the blood?

We need 28.18 mL of 0.2437 M HCl solution to completely titrate 25.00 mL of Ba(OH)2 solution of unknown concentration.  What is the molarity of the barium hydroxide solution? (Hint: First, write a balanced equation for the reaction.)

What phase transition is occurring between points B and C on the cooling curve?

Calculate the amount of heat energy required to evaporate 55.0 g of water at 100.0°C. (molar heat of vaporization of liquid water = 4.07 × 10^4 J/mol)

A solid substance has a very low melting point, is soft, and does not conduct heat or electricity. This substance is probably a(n) ________ solid.

What phase transition is occurring between points D and E on the heating curve?