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Solving a problem in chemistry section 10 point 52

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52. As a result of the interaction of 1 g of perhydrol with a solution of potassium dichromate in the presence of sulfuric acid is recovered gaseous substance 223.7 ml (volume measured at 27 ° C and 752 mm Hg. V.). Calculate the mass fraction of hydrogen peroxide in perhydrol.
Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)
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