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When 18.02 g of water is decomposed by electrolysis, 16.00 g of oxygen and 2.02 g of hydrogen are formed. According to the law of definite proportions, what masses, in grams, of (a) hydrogen and (b) oxygen will be formed by the electrolysis of 775 g of water?
Calculate the Kb of hypochlorite, if a 0.146 hypochlorite solution at 10c, has a pH of 11.97 at this temperatur. the kw of water at 10c is 1.20 x 10^-15
For a reaction of the form, A + B + C Products, the following observations are made: doubling the concentration of A increases the rate by a factor of 4, doubling the concentration of B has no effect on the rate, and doubling the concentration of ..
the dissolution of nh4clo4 in water is endothermic with change of h33.5kjmol. if you prepare a 1.00m solution of
what would be the effect on the results of mistakenly adding 2.43 times 10^-3 g Mg to 4.0 mL of 0.1M hcl rather than to 4.0 mL of 1.0M hcl as instructed
Phosphoric acid, H3PO4(aq), is a triprotic acid, meaning that one molecule of the acid has three acidic protons. Estimate the pH, and the concentrations of all species in a 0.100 M phosphoric acid solution.
an electric power station annually burns 3.3 107 kg of coal containing 1.4 percent sulfur by mass. calculate the volume
The density of air at ordinary atmospheric pressure and 25degrees celcius is 1.19g/L. What is the mass, in kilograms, of the air in a room that measure 12.5x19.5x9.0ft.
Describe a simple and practical way to make 1.00 L of this buffer solution, assuming a 1.0 M solution of the molecular base is available and that the chloride salt of the conjugate acid is available as a solid
a mixture of 0.47 mole of H2 and 3.59 moles of HCl is heatedto 2800 degrees C. Calculate the equilibrium partial pressures of H2, Cl2,and HCl if the total pressure is 2.00 atm. For the reaction:
Octane has a density of 0.692 g/mL at 20 C . How many grams of O2 are required to burn 19.0 gal of C8H18.
A 10.0cm long cylindrical glass tube, sealed at one end, is filled with ethanol. The mass of ethanol needed to fill the tube is found to be 11.48g . The density of ethanol is 0.789 g/mL.
Problem- 15.0 mL of 0.50 M NaOH is added to a 100.-mL sample of 0.433 M NH3 (Kb for NH3 = 1.8x 10-5). What is the equilibrium concentration of NH4+ ions
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