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what is the approximate value of the equilibrium constant Kn for the neutralization of nitrous acid with ammonia shown in the equation below? The Ka for HNO2 is 4.5 X 10-4 and the Kb for NH3 is 1.8 x 10-5
HN)2(aq) + NH3 (aq) ------ NH4NO2(aq)
The mass percent of an element in a compound is the mass of the element (total mass of the element's atoms in the compound) divided by the mass of the compound
Using this information and the Clausius-Clapyron equation (P = const•exp(-?Hvap/RT)), calculate the vapor pressure of 3 nm droplets of mercury.
The mass of a cube of iron is 284 g. Iron has a density of 7.87 g/cm3. What is the mass of a cube of lead that has the same dimensions?
Heating any of the three isomeric dimethylbenzenes with HF in the presence of BF3 to 80 C leads to the equilibrium mixture shown below: 1,2-Dimethylbenzene: 18% , 1,3-Dimethylbenzene: 58% , 1,4-Dimethylbenzene: 24%
A gas occupies a volume of 458 mL at a pressure of 1.01 kPa and a temperature of 295 K. When the pressure is changed, the volume becomes 477 mL.
An aqueous solution is made by dissolving 24.5 grams of manganese(II) chloride in 466 grams of water.
A student has prepared a 0.309 M solution of Barium hydroxide and a 0.443M solution of hydrochloric acid for you. Determine the volume of the hydrochloric acid solution will be needed to exactly neutralize 10.0 mL of the Barium chloride solution.
Addition to double bonds, oxidation of double bonds - Draw the structure/structures for the major organic product/products formed when 1-methylcyclohexene reacts
The solution has a vapor pressure of 262 . Pure pentane and hexane have vapor pressures of 425 and 151 , respectively, at room temperature.What is the mole fraction of hexane? (Assume ideal behavior.)
A solution is made by mixing 500 mL of .167 M NaOH with 500 mL of .1 M CH3COOH. Calculate the equalibrium concentrations of H+. CH3COOH, CH3COO-, OH- and Na+
Write and equation for the reaction of Ba+ with CrO4 2-. Using the eqution you have written, explain how the addition of HCl shifts the equilibrium of the reaction
What is the molar mass of adrenaline in a solution of 0.64 g of adrenaline in 36.0 g of CCl4 elevates the boiling point by 0.49?
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