To construct a calibration graph for fluorescent determination of magnesium with lumomagneson IREA, a sample of Mg (NO3) 2 * 6H2о weighing 0.1054 g...
A weighed portion of an organic compound weighing m g was burned in a stream of oxygen. In gaseous pyrolysis products, water was frozen, and carbon...
A weighed portion of an organic compound weighing m g was subjected to pyrolysis under conditions when the sulfur in the substance transforms into...
When titrating 50.00 ml of a mixture of NaOH and NH3 with 0.0100 M HCl, the following data were obtained: V (HCI), ml01.002.003 004.005.00 x, Cm, for...
9. The rate constant of the reaction proceeding according to scheme 2A B→C is 5*10-4. Calculate the reaction rate if the concentrations of substances...
1. To check the results of the determination of ethanol in wine by the enzymatic method, gas chromatography was used. With repeated analysis of the...
2. How many ml of sulfuric acid with a density of 1840 kg / m3 was poured into a calorimetric beaker with water, if it is known that 3500 J of heat...
4. Surface activity of butyric acid (C3H7COOH) in aqueous solution 208 mJ l/m2 mol. Calculate the surface activity of propionic acid (C2H5COOH).