Manganese dioxide, or pyrolusite (q.v.), Mn02, the most important oxide, may be prepared by heating crystallized manganous nitrate until red fumes are given off, decanting the clear liquid, and heating to 150 0 to 160° C. for 40 to 60 hours (A. [Please select]
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We offend it in the decanting and distress it in the serving. [Please select]
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The extraction of the rosin soap is conducted by adding 10 cubic centimeters of acetone eight times, rubbing the mass thoroughly with a spatula and decanting. [Please select]
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