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- Why not 3?Please explain how to find the highest O.N and why is for example number a) Cr +6 and not +7. Thank you!A 0.8780 g sample containing only NaCl and KCl was treated with AgNO3. The AgClformed had a mass of 1.913 g. Calculate the %Na and %K in the sample. (Na=22.9897,Cl=35.453, K=39.0983, Ag=107.868, N=14.0067, O=15.9994)
- A 0.7336-g sample of an alloy that contains copper and zinc is dissolved in 8 M HCl and diluted to 100 mL in a volumetric flask. In one analysis, the zinc (At. Mass = 65.38 g/mol) in a 25.00-mL portion of the solution is precipitated as ZnNH4PO4, and isolated as Zn2P2O7 (FM = 304.70g/mol), yielding 0.1163 g. The copper (At. Mass = 63.55 g/mol) in a separate 25.00-mL portion of the solution is treated to precipitate CuSCN (121.63 g/mol), yielding 0.2383 g. Calculate the %w/w Zn and the %w/w Cu in the sample.I wanna know how to make V = abc(1 − cos2α − cos2β − cos2γ + 2 cos α cos β cos γ)1/2 (the volume of triclinic). When a≠b≠c, α≠β≠γ ≠90°A mixture containing only BaO (153.3264) and CaO (56.0774) weighs 3.00 g. The oxides areconverted to the corresponding sulfates, which weigh 5.00 g. Calculate the % Ba and %Ca in theoriginal mixture. Ba (137.327); Ca (40.078); BaSO4 (233.896); CaSO4 (136.1406)
- 26. A 1.500 g sample of iron ore, labeled A, was processed accordingly to give 0.5215 g of pure Fe2O3 (159.69 g/mol). A second sample of iron ore, labeled B, weighed 1.750 g and gave 0.5097 g of pure Fe2O3.What is the %Fe in Ore B?What is the %Fe3O4 in Ore B?4.75 Describe the basic steps involved in gravimetricanalysis. How does this procedure help us determine theidentity of a compound or the purity of a compound ifits formula is known?Toxic Cr(VI) can be precipitated from an aqueous solution by bubbling SO2 through the solution. How much SO2 is required to treat 3.00x10^8L of 4.00x10^-2 mM Cr(VI)? 2CrO4^-2 + 3SO2 + 4H^+ —> Cr2(SO4)3 + 2H2O ___kg
- A 67.2 g sample of gold and palladium allo contains 3.40x10^23 atoms. What is the mass percentage of the gold in the alloy. And what is the mass percentage of the palladium in the alloy? Do not give handwriting solution.Help with Part A B and C: Ksp Values: Ionic CompoundFormulaKsp Aluminum hydroxideAl(OH)31.8×10–5 Aluminum phosphateAlPO46.3×10–19 Barium carbonateBaCO35.1×10–9 Barium chromateBaCrO41.2×10–10 Barium fluorideBaF21.0×10–6 Barium hydroxideBa(OH)25×10–3 Barium sulfateBaSO41.1×10–10 Barium sulfiteBaSO38×10–7 Barium thiosulfateBaS2O31.6×10–6 Bismuthyl chlorideBiOCl1.8×10–31 Bismuthyl hydroxideBiOOH4×10–10 Cadmium carbonateCdCO35.2×10–12 Cadmium hydroxideCd(OH)22.5×10–14 Cadmium oxalateCdC2O41.5×10–8 Cadmium sulfide*CdS8×10–28 Calcium carbonateCaCO32.8×10–9 Calcium chromateCaCrO47.1×10–4 Calcium fluorideCaF25.3×10–9 Calcium hydrogen phosphateCaHPO41×10–7 Calcium hydroxideCa(OH)25.5×10–6 Calcium oxalateCaC2O42.7×10–9 Calcium phosphateCa3(PO4)22.0×10–29 Calcium sulfateCaSO49.1×10–6 Calcium sulfiteCaSO36.8×10–8 Chromium(II) hydroxideCr(OH)22×10–16 Chromium(III) hydroxideCr(OH)36.3×10–31 Cobalt(II) carbonateCoCO31.4×10–13 Cobalt(II) hydroxideCo(OH)21.6×10–15 Cobalt(III) hydroxideCo(OH)31.6×10–44…What would happen to CaBr2 + Ni(NO3)3 --> NiBr3 + Ca(NO3)2 , if another CaBr2 was added?