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Use the following data to estimate ΔHf° for magnesium fluoride.
Mg(s) + F2(g) --> MgF2(s)
lattice energy
-2957 kJ/mol
first ionization energy of Mg
735 kJ/mol
second ionization energy of Mg
1445 kJ/mol
electron affinity of F
-328 kJ/mol
bond energy of F2
154 kJ/mol
enthalpy of sublimation of Mg
150. kJ/mol
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How many molecules
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