What mass in grams of Na2S2O3 is needed to dissolve 6.3 g of AgBr in a 1.0 L solution if Ksp for AgBr is 3.3×10−13 and Kf for [Ag(S2O3)2]3− is 4.7×1013? Report your answer with the correct number of significant figures. The Periodic Table of Elements H 106 Li He H 10 Ne Be 9. Transition Metals Alkaline Earth Metals Alka Metais Actinides Lantha

Consider the balanced reaction: 2Cr3+(aq)+3PbO2(s)+6H2O(l)→2CrO42-(aq)+3Pb2+(aq)+4H3O+ (aq) a.Which species is the oxidizing agent b.What is the oxidation state of the O in CrO42- c.What is the oxidation state of the Pb in PbO2? d.How many valence electrons are in the CrO42- ion? e. How many moles of electrons, ne, are transferred per mole of this reaction? f. At a certain point the measured free energy is ∆?. Adding more PbO2 will cause the free energy change of the reaction, ∆G, to choose...(Increase, Stay the same, Decrease) g. At a certain point the measured ∆G is –5 kJ/mol. Lowering the pH will cause the free energy change of the reaction, ∆?, to choose...  (become less negative, stay the same, become more negative) h. The reaction is used to set up an electrochemical cell. What is true about the cell if the measured voltage is negative? Choose ? < ?, ? = ?, ? > ?, Need more info I. At 298.2 K, this reaction has an equilibrium constant K = 1.6 × 1013 . What is the…

Write the net ionic equation for Fe(C2H3O2)3 + Ca(OH)2

Write the balanced net ionic equation for the reaction that occurs in the following case: Pb|Pb(NO3)2||NiCl2|Ni