Which of the following statements is not true? a.) noble gases are very reactive chemicals. b.) noble gases also are called inert gases. c.) noble gases are found in group 18. d.) noble gases possess a full valence shell

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.)