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A sample of chromite is analyzed to contain 30% CrO3. The sample is later fused with Na2O2 and dissolved in acid. If the sample weighs

A sample of chromite is analyzed to contain 30% CrO3. The sample is later fused with Na2O2 and dissolved in acid. If the sample weighs 0.20 gm, estimate the weight in grams of

FeSO4 (NH4)2 SO4 6H20 that has to be added so that 15 milliliters of K2Cr2O7, solution are used. 0.20 millimole of Cr is present in the K2Cr2O7 solution.

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