5. What is the final ONPG concentration (in mM) of each of the Reaction tubes? ***Hint: Use the table on in your lab manual to figure this out. *** mM of ONPG in Reaction tube OmL of ONPG in a total volume of 2mL = 0 (10mM) = 0mM = 0.25 mL of ONPG in a total volume of 2mL = (0.25*10mM)/2 = 1.25mM mL of ONPG in a total volume of 2mL = (*10mM)/2 = mM
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- 3. The end point is the point where equal masses of reactants combine */^~²) False True 4. Calculate the molarity of 10 ml sample of vit. C solution if the volume of (0.01 M) I₂ solution required for complete reaction is 7.5 ml. * (1 Drint) 1.3 x 10 ² 1.3 x 10 7.5 x 10 3 7.5 x 10 6Determinati an 25 ml by dissolving 110n (111) per 1 This (as ml 750ml experiment Solution The to of was The a and process Q on added The portion layer taken 1 volumetric diluted Litre Colution Two These of in diluted ml soo 1% ETA of Question A. reaction an Solution 0₁ 446 9 of A. R. hydrated sulphate, (NH4) Fe (504) ₂ · 12H₂0 2 of distilled then of wertel) 0,0446 g/L of lion Absorbance was 250 ml in to ·layers frask was Is 2. 3. Was Chlore form and were 5 ml, 10 ml, 15 ml por tions 4. Iron • iron (111) four oxine it mixture the done. (111) seperatory conducted Volume SMT as 10 ml 15 ml 20 ml Plo + absorbance formed readings a (A.R) Jayer measured the por tions Solution was Water diluted out 20 ml were then Each of these mark against funnel as was after with for 8- ity droxy quinolate. follows. to iron (111) solution was prepared of then Calibration was ) 10 obtain collected. ammonium F. W-481,979 then these Absorbance 0,076 0,169 9185 0₁234. Shook. the shaking added portions…concider the reaction: 3KOH+H3PO4---> K3PO4+ 3H20 a 41.2ml sample of koh solution of unknown concentration requires 26.3ml of .165M of H2SO4 solution to neutralize what is the molarity of the KOH solution please show work and sig figs thank you
- PART B. Spectrophotometric Determination of the Copper Content of a Penny Mass of penny: 3.1848 Date on penny: 1964 Concentration of standard Cu2 solution: M Volume, Standard Volume, 1 M [Cu] (M) % Transmittance Absorbance Cu (mL) HNO, (mL) (use Eq. 4) 2. O.06 84.3% Test tube 1 0-074 O.IS 60.95% 0.215 Test tube 2 8. 3 0 244 45.3% 0.344 Test tube 3 300M 33.65% Standard O.473 Unknown 52.822 0-277Solid potassium sulfide is slowly added to 150 mL of a 0.277 M nickel(II) iodide solution until the concentration of sulfide ion is 0.0269 M. The percent of nickel ion remaining in solution is %. 20 Submit Answer $ 4 R F M 07 20 Retry Entire Group % 5 [Review Topics] [References] Use the References to access important values if needed for this question. T Cengage Learning Cengage Technical Support G ^ 6 8 more group attempts remaining D MacBook Pro Y H & 7 N U * 00 8 J I M 69 K O ) 0 < A L P A Previous Next Email Instructor { Save and Exit ~4 ? 1o/index.html?deploymentld%=55750828934189288909969212&eiSBN=9781305657571&snapshotld%32199898&id%3... ☆ IDTAP Q Search this cou Use the References to access important values if needed for this question. The concentration of H3ASO3 in a solution is determined by titration with a 0.1945 M Ce+ solution. The balanced net ionic equation for the reaction is: 2Ce*(aq) + H3ASO3(aq) + 5H2O(1) 2Ce*(aq) + H3ASO4(aq) + 2H3O*(aq) (a) If 19.83 mL of the 0.1945 M Ce** solution are needed to react completely with 30.00 mL of the H3ASO3 solution, what is the concentration of the H3ASO3 solution? M (b) Which of the two solutions was in the buret during the titration? (c) Suppose at the end of the titration, the solution containing the Ce³* ion is transferred to a volumetric flask and diluted to 300. mL. What is the concentration of Ce3+In the diluted solution? Submit Answer 5 question attempts remaining
- MISSED THIS? Read Section 5.2 (Pages 168-173); Watch KCV 5.2, IWE 5.1. Calculate the molarity of each of the following solutions. esc Mother to Son &....pdf ! 1 -0 F1 A N 2 F2 W S #3 80 F3 E D $ 4 X C F4 Part A 0.49 mol of LINO3 in 6.44 L of solution Express your answer using two significant figures. molarity= R Submit Part B 75.3 g C₂H6O in 2.23 L of solution Express your answer using three significant figures. molarity = F LL Submit Request Answer % 5 15| ΑΣΦ Request Answer 16 F5 T | ΑΣΦ 6 V MacBook Air ^ 6 G si F6 Y B & 7 H 8 F7 U * 00 ? 8 N M M DII F8 J - ( C MChromatography: Evaluating Pen Inks PreLab Questions Name Section 1. Observe the following picture of several known indicator dye solutes spotted on the stationary phase, phenol red, bromocresol purple and bromothymol blue respectively. Which solute spot would most likely cause problems with the chromatography process and why? Explain. Treral Bed Erom Cresol Parpie Gromm Blueline teaching and lea X + om/ilrn/takeAssignment/takeCovalentActivity.do?locator=assignment-... ☆ Visited [Review Topics] [References] Use the References to access important values if needed for this question. In the laboratory a student combines 20.5 mL of a 0.177 M sodium phosphate solution with 12.7 mL of a 0.571 M sodium bromide solution. What is the final concentration of sodium cation ? M Submit Answer Retry Entire Group 9 more group attempts remaining Previous Next I Save and Exit ☐ X S 11:09 PM 8/31/2022 ...
- ookmarks d My Ho 1 ои х C|Cheg keAssignment/takeCovalent Activity.do?locator-assignment-take eq M M -eq Ereg Preq 2req 2req 2req 2req 2req Profiles Tab Window Help Paraph Paraph A very ► Hey D 80 F3 th 122 Quiz 5.pdf ^ Submit Answer Solubility of Ionic Compounds Classify each of the compounds as soluble or not soluble: soluble silver acetate soluble sodium nitrate not soluble chromium(II) sulfate a F4 ост 12 . OL Math 122 Quiz 5.docx tv Retry Entire Group 9 more group attempts remaining 9 A ♫ F5 Use the References to access important values if needed for this question. A Nil Micros H F22-Chem-103x....pdf MacBook Air F6 F7 One S ► 11 FB Untitle O 15 Fel-F22-Chem-1....pdf W F9 3 Gram G Classi Aa e F10 < Emailapacit d. The purity of KHP standard was taken as 100% when in actual it was not. Clear my choice A 10.00 ml sample of Y(OH)2 was titrated to the stoichiometric point with 14.50 mL of 0.2345 M H2X. The total number of moles of Y(OH)2 is O a. 0.0034 O b. 0.00469 O c. 0.00034 O d. 0.0068 Clear my choice5. Fill in the values below and calculate [], the initial concentration of F for Determination 1. (This is the concentration after the reagents have mixed but before the reaction begins, referred to here as C2.) See Table 1 in the procedure to find the volume of 0.300 M KI used. The total final volume of the solution is 100.0 mL. See footnote 2 on p. 6 for help. C; = V1 = C2 = V2 =