Use bond energies and the fact that the heats of formation of OF2 and OCl2 are 24.7 and 80.37 kJ/mol, respectively to determine the O-F and O-Cl bond energies. DO-F = kJ/mol DO-Cl = kJ/mol

100 grams of molten lead (600°c) is used to make musket balls. if the lead shot is allowed to cool to room temperature (21°c), what is the change in entropy (in j/k) of the lead? (for the specific heat of molten and solid lead use 1.29 j/g⋅°c; the latent heat of fusion and the melting point of lead are 2.45 × 104 j/kg and 327°c, respectively.)