1. Determine the amount of material equivalent and molar mass equivalents of phosphorus, oxygen and bromine compounds PH3, H2O, HBr if the mass of substance 3.54 g
The objectives of the manuals "Chemistry. Guidelines, work program and control tasks, "ed. prof. VA Averyanov, Part 1, Tula, 2004.
Many problems have been successfully surrendered !!!
For any questions (explain answer additional questions of the teacher, etc.) can be treated as Seller is the direct executors of tasks.
Tasks performed in Microsoft Word, graphics - in Microsoft Exel or OriginPro; formula typed in MathType (if formulas are unreadable signs, then you must install the editor); files are archived WinRAR.