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- Lead poisoning has been a hazard for centuries. Some scholars believe that the decline of the Roman Empire can be traced, in part, to high levels of lead in water from containers and pipes, and from wine that was stored in leadglazed containers. If we presume that the typical Roman water supply was saturated with lead carbonate, PbCO3 (Ksp = 7.4 1014), how much lead will a Roman ingest in a year if he or she drinks 1 L/day from the container?4.5 gm of oxalic auid/ foOH ) COUH presentin soomlor foletion. Therm Normalilay is ( Hint: COOH → C0 A) 0.1 B) 0-L C) 0.3 D) O. g.t to tuasd ssem uL () the The moralify of the souhm The mnany of the sonunon हुर्गज् strongest Type f the IMf fornd in this soution to ·a t o tusad Ssem of mg coH)2 in 300.0g %801.da, at punot seu woynios (alculate. て of water. The oensiy of the finoal ha unthos
- ne concentrated solution. 3- Describe the preparation of 400 mL of 6 F H;PO, from the commercial solution which is 85% (w/w) H;PO4 and has density of 1.69 g/mL.E 50 um? of 6-2 moldni3 Solution Na, (o3 was dileted usith distilled weeter to obtain f 250 cm3 Sorlution, what world be the Con ien trei blum f Sbuution? the resulbing ofWrite the expression for the K of H2PO;. HPO OH %3D [H2PO;] [HPO H,0*] %3D [H2 PO,] [H3 PO3[H3O*] [H2PO;] K= [H3 PO3][OH] OK= %3D [H, PO
- **** (5) 3 Opper mctal (ind Concentad ted und aad be oonsis hange in , releare of lgas mredcolo color to green releave of gas mn Hedcolor INU we and thabbles in thi botton solutim Not HNU3rani 3(Q) Hy Dnt (uNOgndi (L) Balanced Net Ionic Equation No.2/CHB en+GEARWhich of the following salta la most soluble? AKOH)3-Kgp = 19 109 BigS3-Kap = 16*1020 A22CO్; - Kgo = 6.1• 1012 AgCl-K n = 1.8*10-10A 0.450 M solution of KCIneeds to be prepared throughdilution. A 2.00 M stocksolution will be added to a0.250 L volumetric flask andthen water will be added to the0.250 L mark.Determine the volume (in mL)of the 2.00 M stock solutionof KCl needed to produce thissolution.
- 70 alll ll ? ..::0E is اجابة قصيرة A solution of Al2 (S04) 3 at a concentration of 0.3 N , What is the volume needed to prepare a solution at a concentration of 0.04 M in a volume of 150 ml of distilled water إجابتك كتب إجابتك. . ismany grams of Anilin GHs NH2 Should be Solved in water to Prefare dow a Solution of I liter containg oH iong Know that Kb (AnilWhe)=4*/0 with -6 2* 10 -10ml of sodium carbonate solution 250 contains 2.65g of Na2CO3. If 10 ml of the solution is diluted to1 L. What is the concentration of the ?resultant solution molecular weight of sodium carbonate) * (=106g/mole M 0.1 O 0.001M O 0.01M O 1000M O