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... same thing done with the sodium iodide. (Caution: Before carrying out the actions with Lead Nitrate put on gloves for protection) Data: Test Tube Drops of Nal Solution Drops of Pb(NO3)2 1 54 6 2 48 12 3 42 18 4 36 24 5 30 30 6 24 36 7 18 42 8 12 48 9 6 54 Test Tube Height of Precipitate (mm) Ratio of Drops Pb(NO3)2: Nal 1 2mm 1:9 2 4mm 1:4 3 5mm 3:7 4 5mm 2:3 5 6mm 1:1 6 5mm 3:2 7 4mm 7:3 8 3mm 4:1 9 2mm 9:1 Analysis / Calculations: 1. The reactant ratio 1:1 yielded the greatest amount of precipitate followed by 3:7, 2:3, and 3:2. 2. From the graph you can conclude that the more balanced the ratio the higher the precipitate. 3. Based on the ratio that was determined the correct formula for lead iodide would be 30:30. 4. The reagent of lead rant out first in tube 2 and the reagent of sodium iodide ran out first in tube 7. Applications: 1. It is import...