18. What coefficients can be used to balance the following equation? (2 points) K2CO3 + FeCl3 -> KCI + Fez (CO3)3
2, 2, 4, 1
O 3, 2, 6, 1
O 1, 1, 2,1
O 3, 3, 6, 1

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.)