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- A chemist dissolves a 1.497-g sample of a type of metal (an alloy of Sn, Pb, Sb, and Cu) in nitric acid, and metastannic acid, H2SnO3, is precipitated. She heats the precipitate to drive off the water, which leaves 0.4909 g of tin(IV) oxide. What was the percentage of [in in the original sample?6 .. C. Reactivity of metals: 1. Observations (Indicate whether the reaction occurred, the vigor, extent and speed): Al Cu Zn a. No reaction b.No reaction Cu is least reactive Al,(SO.); then Al2 therefore Cu is not able to displace Al from solution C. 3Cu+Al,(SO,)3 d.Cu + ZnSO4 Al is more reactive CuSO, than Cu thus Al displaces Cu in solution eAl,(SO,), + Zn f.No Reaction ZnSO, i. h. g. H,SO, not ionic equation for the reactions above.IMG_9524.HEIC Open with Preview enow.com/ilrn/takeAssignment/takeCovalentActivity.do?locator=Dassignmen Use t The following are unbalanced equations. They show the kinds of reactal H2O2 H20+ 02 decomposition (b) Fe + O, → FeO (c) HCI + 02 → H2O - Cl, (d) H,SO, - Zn(OH)2→ ZnSO,+ H2O Submit Answer Try Another Version 1 item attempt remaining
- 8. Have cach member of your group "balance" two of the equations below. Label cach equation with the member's name. a. KCIO, + CaHzOn KCI + CO; +HO b. NH + C2 → NH, + NHCI c. HgO Hg + O d. Ca + H,O → Ca(OH); + H; c. NazO; + H,SO, - NaSO, + HO: f. N: + H: NH6. The phosphorus content in a 0.3004-g sample was precipitated as (NH4);PO4 .12M0O3 a slightly soluble precipitate. The precipitate was filtered, washed, and further redissolved in acid. The resulting solution was treated with an excess of Pb²* resulting in the formation of 0.3017 g of PbMoO4. Calculate the % w/w of P2Os.||со app.101edu.co Brightspace Walmart-Hiring Ce..... ock Fn Ese + # Et F1 2 a A Z w S P X Alt Which of the following oxides is expected to form the most basic aqueous solution? ॐ 3 E D $ FS R A) Rb₂O F B) In₂O3 C) Al₂O₁ D) SnO₂ E) TeO₂ % JEJE 5 T CL с FO C G F7 B Y Question 18 of 24 H FO & 7 DELL F ★ 8 U 19 J N F10 1 M 9 K O A a L Alt F12 P PrtScr Ctrl E L 7:06 PM WHO 440 4/16/2023 Inserv . Delete Backspace PqUp Num Subm Enter 7 Ę
- 4) Explain the following I, and II reactions and give reasons. NO, %23 i, HNO3, H,SO, ii - Aicı, - ÀICI, ii, AICI,, RCOCI. When titrated in neutral solution with 0.05000 N I2, a mixture of As2O3, AS2O5, and inert material requires 20.10 mL. The resulting solution is then acidified, and excess KI is added. The liberated Iz requires 29.92 mL of 0.1500 N Na,S,O3. Calculate the sum of the weights of As2O3 and As2O5 in the sample.OWLY2 Online teac ngagenow.com/ilm/takeAssignment/takeCovalentActivity.do?locatorcign H Image result for sp... M Gmail * Maps E Attendance March. MClassroomClipboar. nami... OYouTube WM RealClean sdep, apter a What is the balanced equation for this reaction? O FeCl2 (aq) + Na,S(aq)FeS(s) +2 NaCl(aq) O IrCl2 (aq) + Naz S(aq) IrS(s) +2 NaCl(aq) O FeCl2 (aq) + Na, SO, (aq)FeSO, (aq) +2 NaCI(ag) O FeCl2 (aq) +Na, S(aq) FeS(s) + NaCl(aq) Correct The balanced equation for this reaction is: FeCl2 (aq) + Naz S(aq) FeS(s) +2 NaCl(aq) b If you combine 27 g each of NazS and FeCl2, what is the limiting reactant? O NazS O FeCl2 Submit Not Visited Try Another Version 10 item attempts remaining du f7
- Complete and balance the following reactions. Don’t worry about state symbols for the second one. a. CoCl2(aq) + Na2S(aq) --> b. H3AsO3 + RbOH -->MsO CI 11 N 111 1 N 'N 8 O₂N Me -Br 1. Fe powder, 90 °C NH4CI, EtOH/H₂O = 2:1 CI. N noe IZ -N Me 22 (60%) H BrThe 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?
