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- 1. A Cr3+ solution is electrolyzed using a current of0.365 A. What mass of Cr(s) (51.9661) is plated outafter 10 hours?2. When an aqueous solution of CuSO4 is electrolyzedcopper metal is deposited. If a constant current waspassed for 5.00 h and 404 mg of Cu (63.546) metal wasdeposited, what was the current?Quickly plezz!! The levigating agent role in Suppositories manufacturing ??Nickel and copper ores are generally sulfides, whereasaluminum ore is an oxide. Explain this observation on thebasis of the hard/soft acid/base concept.
- Palladium(II) chloride (PdCl2), is abrownish violet powder used for thecosmetic tattooing of a white opacity in thecornea. Predict the structure that PdCl2would adopt if its known that the cationradius for Pd2+ is 128 pm and the anionradius for Cl- is 181 pm. (Give detailed step by step solution with explanationThere are two different crystalline vanadium fluorides, in both the V is in an environment octahedral. One is blue and the other is yellow. The oxidation state of vanadium in one of them is +2, and on the other, +3. Deduce, from the different crystal field doublings, which is which (No numerical calculation necessary, use spectrochemical series and spectrum electromagnetic and / or colored circle to justify your answer).
- Write a balanced net-ionic equations to describe a. reduction of Fe3+ to fe2+ by SO2b. reaction of H2MoO4 in a Jones reductorc. oxidation of HNO2 by a solution of MnO4-d. reaction of aniline (C6H4NH2) with a mixture of KBrO3 and KBr in acidic solutione. air oxidation of HAsO3(2-) to HAsO4(2-)f. reaction of KI with HNO2 in acidic solution(a) What compound precipitates when aqueous solutions ofFe21SO423 and LiOH are mixed? (b) Write a balanced equationfor the reaction.Manganese silicide has the empirical formula MnSi andmelts at 1280 °C. It is insoluble in water but does dissolvein aqueous HF. (a) What type of compound do you expectMnSi to be: metallic, molecular, covalent-network, orionic? (b) Write a likely balanced chemical equation for thereaction of MnSi with concentrated aqueous HF.