Unkhown B- mass of unknownsulfate 0.48999 maus of Empty Crucible d cover 20 - 43 289 20.9526g 0-5198 mass of Crucibde ģ Barium cultate mass of Barium Sulae % wfw geere culfate % Ba?t
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- 34.) Belapce euch ef the told SO.ce +rClkcapt a. Kz SOu lap)+ BaClzegs equations. bifels)t NaOHyag)+HC10ucag Nacio, cag) +H2O(1) > mg Ocss C. Mnes> d. Mg(s)+ MazOg(s) PO4 lag) +H20) + HzO)> HNOstag gi BaO,(s)+H,00) - >Bal(0H), laq) +Oz(gs 1. h. NH3l) + Ogl4)- NogsK/sll.l 9:06 hw.pdf > Hw () Detevmine the melarity f e-ch of the foiloming W 1.5 mol kcl in l.SLof Salutn o.5 gm f Hz Sou inIL soo mL : sdusio- 20 gm of AI( No3), in 2.25 kg of Cusoy in l.45 Lot solution O o.006 mol. of Br, in lomL of sole O. v0075 gm of C Hs Noz in 1.usmL of solution Hint. The atomic numbers usedin the above Problem ave O= 16 Cu: 29 Br: 35 K= 19 S: 16 Al: 13 N = 7Calc ulatetheconcantrationoF Potassiamioningrans Perliterof termixing loomlof0.250M Kel n 20oml of o loo M K 2Soa (atonic weight k 37-1ms(ma)
- Which of the following equations is correct? Oa. O a. AG = Ginitial – Gfinal %3D Ob. . 1G = AH - TAS %3D O G=S- PV Od G = H – PV O e. AG = AS – TAHtebe laer. harasof lrglamriradip VICE ling trm Calleg Capialgh L ELECTRONIC FIGETING On ENAPPROPRIATE PHTSICAL CONTACT Prac. Prob's FI18-22 4) feCly 5) Biz Molar Mass Ann K 2) 39.10+ 16.0 t1.01 56.11 g/mol )P-30.9 2) CI: 51.99 ) Ca- 40 07 4) Ar: 149 5) Na= 20.9 6) Al= 269 H= 101 2) Kott 3) BeCla ) CI = 2(35 45)= 0.91 g/mol note book CH 17) Dr na %3D Exit ticket: 1-18-aa frm 1-1 aned selve slom problem ) Calculate the number oF COa mal in 3.00 molecules (I mole =(6 02 Y 10) Còa= 44.619) 2) UF; 3) Soa 9) Hypy 5) (nH), SOy ) CHy CootH 3.00 X |- 10-2 ) nuc- 1) mala erent Syst Planct +Andna Boc 557. An impure sample of Na S04 weighed 1.562 g. A BASO, precipitate from this sample weighed 2.496 g. Calculate the percentage of sulfur and the percentage purity of the salt. Ans. 21.97% S; 97.25% Na S0. ore sample which weirbed
- Ce un e at A. At the composition of 61.9 %wt Sn, no solid phase exists. B. As more Sn is added the mixture freezes to a solid phase. C. When the composition is at 90 %wt Sn, most of the Sn is in the liquid state. D. At the composition of 30 %wt Sn, most of the Pb exist in the pure solid state 1050Data Mass of unknown metal Cark te ?l.005g Volume of uniknown solotion CmL) Volume of HCI added Inital burct readinglmL) Final buret reading (mL) 20.00ML (mL) 15.00mL 20.SSmL 30.90ML Volume Na OH delivered (m L) Concentration of HCI: O.1708M Concentrahon of NaOH: O.1000M * Pipetted 10.35mL 20.00mL Of solution prepared in 250.0 mL volumetric flask Questions', 1. Calalate the number of moles of Na OH used for back titration? 2. Calculate the number of moles moles of metal carbonate present in 20.00mL portion of the metal Carborate soltion? 3. Calculate molar masS of 3.Calculate in knon metal carbongte: Egbabl Qe A Solution is Prefared Tby dissdlving 6g AgNoz ina 250-ml Volumetric Hask and diliting the molaurity of the Silver nityate Solution How to Volume. alculute Many millimoles Ag No3. Were dissalved7 twt Ag Noz 169-9Hat
- ASSume an excesS of of Zn? t Iz fac) +Zn Iz faa) 2.* OWLY2 |Online Schedu x My Home ssignment/takeCovalentActivity.do?locator%3Dassignment-take C MasteringAandP: L. G what is the cell wall.. G Mary was in a terrib.. Dimensional Analy.. L. [Review Topics TReferences Use the Referemces ta acces impartant vaees if needed far this question. Does a reaction occur when aqueous solutions of zinc chloride and potassium sulfide are combined? O yes O no If a reaction does occur, write the net ionic equation. Use the solubility rules provided in the OWL Preparation Page to determine the solubility of compounds. Be sure to specify states such as (aq) or (s). If a box is not needed leave it blank. Submit Answer Retry Entire Group 2 more group attempts remaining MCtext Nu Whe ofect wokl hgh presure have on the proketon of NOg? Why? 4 Wharwoud be the efat of ach of the fulowing on the equilbrium iimvolving the reacion o coke (C (s) when e prokre CO and H C) H,0) cog)+ H,(E) Akten of steam An increase in pvessure Removal of H as it is prodced Akng a catalst S he birding of axygen to hemagbbin (abbreviated Hb). giving oxyhemogldbin (HbO,) s partially glaed by he compk ad tcan be summarized as bolows: contraon of H and CO, in the blood. Although the equilibrum is very HbO, H CO, co,HbH + o, Accordg to Le Chaelers Princpe what wauld be the effect of each of the following on the squban? a The produc on of ac acid (whch contairs Hr) and CO, in a muscle during vigorous exercise? ng besh oxygen aiched a?