In the Reaction: Pb(NO3)2 + 2 KI Pbl2 + 2 KNO3 How many grams of lead (1) iodide, Pbl2, is produced from 82.7 grams of potassium iodide, KI? g Pbl2 (ONLY include number value, DO NOT include units or letters! Round to two decimal places.)​

Which of the following observations indicates that there is a small, dense, positively charged part in the center of an atom? some uncharged particles are scattered by a gold foil. all uncharged particles are attracted towards a gold foil. all positively charged particles pass straight through a gold foil. some positively charged particles bounce back from a gold foil.

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)

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.)