#gen chemistry

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Heat of Vaporization [Ex. 2]

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Equations for Alpha Decay [Ex. 2]

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Vapor Pressure and Intermolecular Forces [Ex. 1]

Does H2O or NH3 have a higher vapor pressure, based on intermolecular forces?

-- draw the structures

-- both have dispersion forces, because dispersion forces affect all molecules

-- both have hydrogen bonds

-- H2O has a hydrogen bonded to an oxygen, which is stronger than a hydrogen bonded to a nitrogen because oxygen is more electronegative than nitrogen

-- H2O has stronger intermolecular forces

-- stronger intermolecular forces = lower vapor pressure

-- NH3 has a higher vapor pressure

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Parent Hydrocarbon of Branched Alkanes [Ex. 4]

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Comparing Intermolecular Forces Ex. 1

Does H2O or NH3 have a higher boiling point, based on intermolecular forces?

-- draw the structures

-- both have dispersion forces, because that affects all molecules

-- both have hydrogen bonds

-- H2O has a hydrogen bonded to an O, which is stronger than an H bonded to an N

-- H2O has stronger intermolecular forces

-- stronger intermolecular forces = higher boiling point

-- H2O has a higher boiling point

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