The formation of tin IV chloride is as follows; the change in enthalpy is (AH) is -511 kJ/mole. Sn (s) + 2 C12 (9) --> SnC14 (1) + Heat
The reaction would be considered?
A. Endothermic, releases heat
B. Exothermic, release heat
C. Endothermic, absorbs heat
D. Exothemric, absorbs heat

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.)