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Question: figure 12 shows an analytical method for the analysis of...

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Figure 1.2 shows an analytical method for the analysis of Ni in ores based on the precipitation of Ni2+ using dimethylglyoxime. The formula for the precipitate is Ni(C4H14N4O4)2. Calculate the precipitate’s formula weight to the correct number of significant figures.

CH3 он но CH3 dimethylglyoxime

Original Sample Start HNO,, HCI, heat Residue Solution 14 hours 20% NH,CI 10% tartaric acid make alkaline w/ 1:1 NH 4 Solids Solutions key solid present? yes make acidic w/ HC %Ni-mass A x 0.2031 x 100 mass sample 190 alcoholic dmg make alkaline w/ 1:1 NH mass A Ni(dmg) 18 hours

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