Account to peers.fm (Power User) 106 gb buffer
Russian private tracker. There is a "zest". This is a section of the database (federal databases, directories, etc.) An account with a 100 GB buffer...
106. Solving a chemistry problem
597. What is the valency and oxidation state of mercury in the Hg 2 ion? Write an equation for the reaction of dilute nitric acid with excess mercury.
106. Solving a chemistry problem
420. A solution containing 1.632vg of trichloroacetic acid CCl3COOH and 100g of benzene C6H6 solidifies at a temperature 0.350 K below the freezing...
106. Solving a chemistry problem
606. Write reaction equations for the following galvanic cells: A) Pt(t)| Pb(t)| PbI2(t)| HI(aq)| H2(g)| Pt B) Cu(t)| Zn(t)| ZnCl2(aq)| AgCl(t)|...
106. Solving a chemistry problem
714. The reaction of the first order proceeds by 30% at 25 ° C in 28.5 minutes, and at 40 degrees Celsius in 246 s. Determine the coefficients of the...
106. Solving a chemistry problem
822. For the bimolecular reaction of the persulfate ion with the bromide ion (-> products), the following dependence of the rate constant on the...
106. Solving a chemistry problem
236. Milk packages indicate that the fat content is 3.2%. Determine the volume of the dispersed phase in a package with a capacity of 1 l and the...
106. Solving a chemistry problem
1. Compare the thermal stability of potassium, lead and silver nitrates. Write the reaction equations for their thermal decomposition
106. Solving a chemistry problem
27. The alkaline runoff of the enterprise has an alkalinity of 60 mmol/l and a water consumption of 200 m3. Acid runoff from the same enterprise...
106. Solving a chemistry problem
57. Is it necessary to alkalize water when treating it with iron coagulant FeCl3*6H20, if the dose is 30 mg/l (in terms of anhydrous salt) and the...
106. Solving a chemistry problem
When determining calcium by the gravimetric method, the following CaO content (%) was obtained: 12.86; 12.90; 12.93; 12.84. Calculate the standard...
106. Solving a chemistry problem
19. Calculate the absolute entropy of an ideal solution formed by mixing 0.092 kg of ethyl alcohol and 0.096 kg of methyl alcohol at 298K and normal...
106. Solving a chemistry problem
33. In a thermally insulated vessel containing 5 kg of water at 30 ° C, 1 kg of snow is introduced, the temperature of which is 10 ° C. How does...
106. Solving a chemistry problem
39. During the combustion of gaseous ammonia, water vapor and nitric oxide NO (g) are formed. Write the thermochemical equation for this reaction...
106. Solving a chemistry problem
623. Standard electrode potentials are known at 25 °C Pb2 (aq) 2e = Pb(t) PbSO4(t) 2e = Pb(t) SO42-(aq) Find the Gibbs energy and the water...
106. Solving a chemistry problem
To build a calibration graph in the determination of nickel, 2.5 was selected; 5.0; 7.5; 10.0; 12.5; 15.0 ml of 0.0125 N NiCl2 solution and diluted...
106. Solving a chemistry problem
6. The analyzed solution contains nitrate ions. To determine them, a galvanic circuit was made up of an indicator nitrate-selective electrode and a...
106. Solving a chemistry problem
209. Calculate the ebullioscopic constant of water (boiling point 100 C) if the specific heat of evaporation is 2258.10 kJ/kg.
106. Solving a chemistry problem
433. Determine the Michaelis constant and the reversal number of the enzyme α-chymotrypsin in the reaction of hydrolysis of N-acetyl-L-valine methyl...
106. Solving a chemistry problem
506. It is known that the molar refraction of a liquid is approximately equal to its molar volume. Based on this, calculate the radius of the...
106. Solving a chemistry problem
14. How many times should the concentration of carbon dioxide be increased so that the rate of the reaction CO2 C = 2CO increases by 3 times?
106. Solving a chemistry problem
23. Calculate the rms shift of Fe(OH)3 hydrosol colloidal particles at 293 K over time τ = 4 sec, if particle radius r = 10-8 m, water viscosity η =...
106. Solving a chemistry problem
66. Using the Smoluchowski equation, calculate and plot the change in the total number of particles during the coagulation of sulfur hydrosol. The...
106. Solving a chemistry problem
410. For a certain reaction, it was found that when the initial concentration of the reagent changes from 0.502 to 1.007 mol/l and other conditions...
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