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Barbituric acid, HC4H3N2O3.... Its pKa is 4.01. What is the [H+] and pH of a 0.044 M solution of H-Bar?
In the chemical reaction used in automotive air-bag safety systems, N2(g) is produced by the decompositon of sodium azide, NaN3, at a somewhat elevated temperature:
Determine the mass of lithium hydroxide produced when 0.38 g of lithium nitride reacts with water to make Ammonia (NH3) and Lithium hydroxide.
Explain using resonance and inductive effects why trifluoroacetic acid (Pka = -0.25) is more acidic than ethanol (pKa = 16?
Compound A has a parent peak of M+ = 95 m/z in its mass spectrum and shows a medium intensity sharp infrared absorption band at 2280 cm. The HNMR of compound A shows 3 signals in a 4:4:1 ratio.
For the reaction NO2(g)+NO3(g) = N2O5(g), the activation energy is 18 kj/mol and the overall delta E is -136 kj/mol. How times faster will the reaction occur at 50C than at 0C for the forward reaction
How many moles of H3O+ must be added to one liter of a solution to adjust the pH from 8.54 to 5.58? Use E notation and 3 significant figures.
After simple distillation, could GC have been used to determine purity of the distillate (final compound). If so, briefly and completely explain
Combustion of natural gas (primarily methane) occurs in most household heaters. The heat given off in this reaction is used to raise the temperature of the air in the house.
a reaction mixture initially contains a br2 partial pressure of 765 torr and a cl2 partial pressure of 730 torr at 150
A 195mg sample of a non-electrolyte isolated from throat lozenges was dissolved in enough water to make 10.0mL of solution at 25 degrees Celsius. The osmotic pressure of the resulting solution was 4.83atm. Calculate the molar mass of the compound.
It is important to allow each spot added to the chromatography paper to dry completely before adding another spot.
a molecule has an excited state electronic energy level that emits radiation of 1lambda 360 cm-1 when it falls to the
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