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Problem- Calculate the pH of a 250 ml aqueous solution prepared by dissolving 20 g of NH4NO3 in water , given Kb=1.8 x 10 ^ -5 for NH3
As much detail as probable is really appreciated
Predict whether zinc and silver react with 1 M sulphuric acid to give out hydrogen or not. Given that the standard potentials of zinc
A vessel of volume 22.4 dm^3 contains 2.0 mol H2 and 1.0 mol N2 at 273.15K initially. All the H2 reacted with sufficient N2 to form NH3. Calculate the partial pressures and the total pressure of the final mixture.
Use Columb's law to compute the energy of a zinc ion and an oxide ion that are at their equilibrium ion-pair separation distance.
a) How many milliliters of concentrated HCl (36% HCl by mass, d= 1.18g/ml) are required to produce 12.5L of a solution with pH= 2.10. What volume of 6.15M HCl is required to exactly neutralize 1.25L of 0.265M NH3? NH3 + H3O => NH4 + H2O
Plot pH values as a function of volumes of added KOH and suggest appropriate indicators for the titration.
which effect on atomic size is more significant, the nuclear charge (p+) or the energy level that the eleectrons are filling explain why.
The Greek mathematician Archimedes is credited with discovering how to verify the amount of pure gold in an irregularly shaped object (e.g., a crown) by placing it in water. How much water should be displaced by a pure gold object having a mass of..
gasohol is a mixture of 90 gasoline and 10 ethanolch3 ch2 oh. ethanol is considered anenviornmentally friendly fuel
The Ka value for boric acid is 5.8* 10^{-10}. What is the pH of an aqueous eye wash solution that is 1.3% boric acid by mass? Assume the density of the solution is the same as that of water.
An electric power station annually burns 3.3 107 kg of coal containing 1.4 percent sulfur by mass. Calculate the volume of SO2 emitted at STP
A balloonn containing a sample of Helium gas is warmed in an oven at constanst pressure. If the balloon measure 1.25 l at room temperature (20c), what is it volume at 98 c
Explain why tetrachloethylene is widely used for dry cleaning of fabrics and as a paint stripper.would you expect it to remove grease stains. And if so why
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