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- K/s 9:06 hw.pdf > Hw () Determine the melarity of e-ch of the folloning 2.25 kg of Cusoy in 1.45 Lof solusion O,006 mol. of Br, in lo mL of soleie O. s 0075 gm of C HHs Noz i n 1.osmL of solution Hint. The atomic numbers used in the above Problem ave O = 16 Cu: 29 Br: 35 K = 19 CI - 7 S: 16 Al: 13 N = 7d) 550 mL of o-0750 M Ag NOs from the solid reagemt e) 500 mL of 4-75 % (W/v) agueous ethonol 4) 250 ML Solution of 25 ppm of Na', from sodium suifate CNas So4)ersations Window Help То: EM Delive Which of the following statements best describes the solubility of Pbl2 in a solution containing NaNO3? Question 2 options: The solubility is higher :39 AM s best a sol... The solubility is lower 0:16 AM It has no effect 3:46 AM iMessage
- The ascorbic acid, C,H;Os (176.124 g/mmol) content of a bottle of peach juice containing 2.50 L was determined by titration with a standard solution of potassium iodate, KIO3. The KIO; solution was prepared by dissolving 100.4 mg primary standard grade KIO; (214.001 mg/mmol) to a final volume of 250.0 mL. To a 200.00-mL aliquot of the sample, 10 mL of KI, 10 mL of HCl and 5 mL of starch solution were added and subsequently titrated, requiring 18.19 mL of the KIO; titrant. The relevant reactions are given below: KIO; + 5KI + 6H* → 3l2 + 6K* + 3H;0 CH;O, + l2→ CH,O, + 21- + 2H* a. How many millimoles of ascorbic acid is in the titrated sample? b. What is the mass of ascorbic acid per bottle of the peach juice?Agency TEXAS UNITED REALTY Real Estate 75 g u cup increases by 2.44 70 V the heat change per mole of Cich dissolved in water Assame that all the heat is absorbed ed E. D 1 15) When aqueous solutions of Pb(NO3)2 and NaCl are mixed, PbCl2 precipitates. The balanced net ionic equation is: O to slom to slom I asdW (SC flot sdi of gaibros (2)OsH bas (2)5¹1 mot Pb2+ (aq) + 2C1- (aq) → PbCl2 (s) prisupe Pb2+ (aq) + 2NO3- (aq) → Pb(NO3)2 (s) H Pb2+ (aq) + 2NO3- (aq) -> Pb(NO3)2 (aq) Pb(NO3)2 (aq) + 2NaCl (aq) → PbCl2 (aq) + 2NaNO3 (s) laubon5 mg/mL 10 mL Example g/L Calculate the concentration of potassium ion in grams per liter after mixing 100 mL of 0.250 M KCI and 200 mL of 0.100 M K2SO4. (At.wt. K is 39.1 g/mol) NOE Alth Solution COD
- Caleulate the format and Molar concentrations of the constituents in 2-30g of othanot(g-fwa46u4in 3-Belitresof aqueoust Solution1.750 g öf HBF ih 250.0 ML of 1410 aqueous solution der the following reacti.. 8. You are asked to make 250.0 mL of a 1.5 M solution of H2SO4 in lab. You have a stock solution of 10.0 M H2SO4 available to you. How do you make the solution? + 9. Consider the balanced reaction in 1b above. If you begin with a 150.0 mL of a 1.3 M solution of NH&OH and excess CuSO4, how much Cu(OH)2 will you produce? MacBook Pro DII F9 F10 F3 F4 F5 F6 F7 F8 @ 2# 2$ 2 3 4 5 8 W R Y この LLFrom 0.8 av. lb of 20% w/w KOH solution, 72.6 O 121 142 86.2 Next g of 12 percent w/w KOH may be produced.
- When 15.0 mL of a 0.5757 M potassium phosphate solution and 0.100 L of 0.7575 M HgNO3 were combined exactly. (b) After the reaction is complete, what is the concentration (in ppm) of the unreacted species? (MM of Hg3PO4=696.74g; Hg=200.59, N-14; O-16)Ans. 17.15 mg. 54) A 1.000-g sample of a mixture which contains only NaCl and KCl gare a precipitate of AgCl which weighed 2.000 g. What are the percentages of Na and K in the mixture? ins 10 g Ans. 44.77% K; 5.75% Na. 1:J 55. I- can be sernarated from othorA 2.663 g sample contain thiourea (NH,),CS (76.12 g/mol) was extracted into a dilute H,SO, solution and titrated with 37.88 mL of 0.006882 M Hg" according to the following reaction 4(NH2),CS+Hg [(NH),CS] Hg* Calculate the %((NH,),CS in the sample? 1. 02.981 % 2 07317 % 3. O98.45 % 4. 03.248 .