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- d) 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)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 = 7The 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) laubonersations 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 iMessage5 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
- 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)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 LL
- From 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.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 .