Provided a balanced equation with variables (X & Y) instead of actual elements. Determine the charge of the variable X and Y? 4X + 3Y, → 2X Y3
X is +1 and Yis-2
Xis +2 and Yis-2
Xis +3 and Yis-2
X is +2 and Yis-3

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.)