Ionic compounds molecules have strong forces of attraction between neighboring molecules. which conclusion could be drawn about materials held together by ionic bonds? a) these materials would have low densities as solids. b) these materials would have very high boiling points. c) these materials will likely be gases at room temperature. d) these materials will likely be liquids at room temperature.

B) These materials would have very high boiling points.

Upon formation of an ionic bond, two ions with opposite charges have to come together due to the attraction of opposite charges. Ionic compounds have quite strong electrostatic forces of attraction between it's ions. Having strong forces of attraction between compounds in turn means that a lot of energy has to be put in to overcome these attractive forces, and break the individual ions apart. For this reason, ionic compounds will have higher boiling points.

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c. heat could easily travel through the molecules in the air and escape/enter the flask. removing the air slows down the heat transfer.  

when [oh-] is 10-5  m, and [h3o+] is 10-9  m, the poh is 5 and ph is 9. again in both cases the sum of ph and poh is 14. however, the hydrogen ion concentration is not always going to be equal to exactly 1 x 10 raised to a negative number. for example, we skipped over the value of 2.0 x 10-7.