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GCC CHM 151LL: Intermolecular and Ionic Forces ©GCC, 2013 page 4 of 12 Intermolecular and Ionic Forces Comparing IMF U sing Percent Evaporation: This lab will explore changing masses during evaporation of organic liquids. The decrease in mass is related to the strength of the intermolecular forces of attraction. Consider the strength of the forces
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