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with the calculations from the first part of the lab
Freezing Point Depression Name Part A. Initial Freezing Point of Water 0°C 0°C 0°C Mass of water 10. 09 0.0 g 10.09 Mass of Ethylene Glycol 0.5 g 1.0 9 1 .5 9 Molecular weight of Ethylene Glycol 62.1 g/mol moles of Ethylene Glycol molem ole mole kg of water in solution kgkgl molality of solution Final Freezing Point of solution Change in Freezing Point ke value Average ky value "C/m EES Cim Part B. Initial Freezing Point of Water Mass of water Mass of Solute Molecular Weight of solute moles of solute kg of water in solution molality of solution Final Freezing Point of solution Change in Freezing Point ky from part A i for the solute(theoretical) i for the solute(experimental) NaCI K CI Caci, 0 °C 0 °C 0 °C 0.0 9 D.D 9 . 9 .59 . 7 9 1 9 g/mole g/mole g /mole molel molel mole kg kg ml ml -3.7 °C -3.7 °C -5.6 °C°C "C/m "Cm "Cym 0 °c 10. 19 le 9 Part C Initial Freezing Point of Water Mass of water Mass of urea kg of water in solution Final Freezing Point of solution Change in Freezing Point ky from part A i for the solute(theoretical) Molecular Weight of solute (theoretical) Molecular Weight of solute (experimental) -1.9 °C °c "C/m almole g/molel 151
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