42. Solving a chemistry problem
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42. Solving a chemistry problem
30. One of the methods for obtaining oxygen is the decomposition of potassium permanganate. The reaction proceeds according to the scheme: 2KMnO4→ K2MnO4 MnO2 O2↑
Using rational solution, calculate the volume of oxygen and the mass of the solid residue obtained from the decomposition of 50 g of potassium permanganate.
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