An ice cube tray contains enough water at 22.0C to make 18 ice cubes that each have a mass of 30.0 g. The tray is placed in a freezer that uses CF2Cl2 as a refrigerant. The heat of vaporization of CF2Cl2 is 158 J/g. What mass of CF2Cl2 must be vaporized in the refrigeration cycle to convert all the water at 22.0C to ice at 5.0C? The heat capacities for H2O(s) and H2O(l) are 2.03 J/g C and 4.18 J/g C, respectively, and the enthalpy of fusion for ice is 6.02 kJ/mol. 100
Lecture Notes 10/1710/21 Ionic Radius o Ions are atoms in which electrons have been added or removed o Cations are positively charged; outermost electron is removed Anions are negatively charged; electron added to the next available orbital (lowest o energy level that has not been filled) o Have to think of attractive and repulsive forces when thinking about size of ions o Isoelectric Series A group of ions/atoms that have the same electron configuration, but different numbers of protons. The attraction between the electrons and protons increase as the charge on the nucleus increases Trend in Ionization Energies o Ionization energy
