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because electron pairs repel, shapes adjust so that valence electrons are as far apart as possible
hydrogen is covalently bonded to a very electronegative atom is also weakly bonded to an unshared pair of another electronegative atom
Heat of Vaporization
amount of energy needed to convert i gram of a substance from liquid to a gas at the boiling point
amount of energy removed in order to convert 1 gram of a substance from a gas to a liquid at the boiling point
compounds that do not conduct electric current in aqueous solutions or molten state
losing the water of hydration to the air because the vapor pressure is higher than that of the water vapor in the air
substances that remove enough water from the air to dissolve completely and form solutions
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