Q: NH3 NH3 NH3 NH3
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What would be the major product of the following reaction?
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- A 1.00 g sample of a magnesium-aluminum alloy yields 0.107 g H2 when treated with an excess of HCl(aq). What is the percentage by mass of Al in the alloy? [Hint: This is the inverse of Example 4-16. To solve this problem, let m and 1.00 - m be the masses of Al and Mg, respectively, and then use these masses in the setup above to develop an equation that relates m to the total mass of H2 obtained. Then solve for m.]Barium chloride + sodium carbonateb. (i) (ii) A green solid has the empirical formula FeBr3·5NH3 H₂O. Upon reaction with an excess of aqueous AgNO3 it is found that 1 mole of the solid precipitates 3 moles of AgBr. Heating the green solid leads to loss of 1 mole of H₂O to yield a blue solid with the same ratio of Fe:Br:NH3 as found in the green solid. The reaction of 1 mole of the blue solid with excess of aqueous AgNO3 produces 2 moles of AgBr. Draw and name the octahedral green and blue complexes. An octahedral complex having the formula [M(dien)(NH3)(OH₂)F] has a total of 15 isomers. In the sum formula "dien" represents the tridentate diethylenetriamine ligand, which can adopt meridional or facial coordination modes. Draw structures of 8 possible isomers, clearly showing any pairs of enantiomers. The tridentante ligand may be abbreviated as below for simplicity. H₂N : = ΝΗ NH :NH2 N diethylenetriamine (dien) N N
- 2. (Balance the equation) FeCl+NaOH>Fe(OH);+NaclGold is isolated from rocks by reaction with aqueouscyanide, CN-: 4 Au(s) + 8 NaCN(aq) + O2(g) + H2O(l)-------->4 Na[Au(CN)2](aq) + 4 NaOH(aq). (a) Which atoms fromwhich compounds are being oxidized, and which atomsfrom which compounds are being reduced? (b) The[Au(CN)2]- ion can be converted back to Au(0) by reactionwith Zn(s) powder. Write a balanced chemical equationfor this reaction. (c) How many liters of a 0.200 M sodiumcyanide solution would be needed to react with 40.0 kg ofrocks that contain 2.00% by mass of gold?What mass of NaOHNaOH is needed to precipitate the Cd2+Cd2+ ions from 34.0 mLmL of 0.470 MM Cd(NO3)2Cd(NO3)2 solution?
- II | 4 I| I 1 6 1 E L/ Write a complete, balanced equation for the reaction between copper (Cu") and silver chloride (AgCl):A sample of steel weighing 0.1798 g was dissolved and the manganese present was converted to MnO4– (aq). Water was then added to give a final solution volume of 100.00 mL. The concentration of MnO4– (aq) in this solution was 1.71 x 10-4 M. What is the percent Mn in this sample of steel?Atoms in Element 1 Atoms in Element 2 Atoms in Element 3 Atoms in Element 4 Total Atoms in Molecule Total Elements in Molecule Molecule 2 2H20 4 3CO2 3 6. 9H3PO4 27 36 72 0. 6. 1 20 4 12 20 3. 5Bas(PO4)2 15 10 40 40 105 4 2(NH2S 16 22 4Fes(SOaa 12 12 36 60 3AI(HCO.)a 3 9. 27 48 12 6. 24 42 4 10M9SO. 10 10 40 60 5NaPO. 15 5 20 60 3 7M93(PO4)2 21 14 56 91 8(NH.)PO. 24 96 8 32 160 4 4NaHCO, 4 4 12 9KCIO, 9. 9. 27 45 3 2Ca(CIO.)2 2 4 12 18 3 12Ca (PO4)2 11Ca(NO3)2 7AI(OH). 24