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A mixture consisting of 0.250 M N2 and 0.500 MH2 in a reaction vessel at certain temperature reactsand reaches equilibrium: N2(g) + 3H2 (g)<--> 2NH3(g). At equilibrium, the concentration of ammonia is 0.050 M. Calculate the concentration of H2 atequilibrium.
how many grams of water can be cooled from 34degc to 26degc by the evaporation of 81 g of water? the heat of
A solution is 0.1 mM in NaF, Na2CO3, and Na3PO4. What would be the order of precipitation as a source of Ca2+ is added gradually to the solution? The relevant Ksp values are Ksp [CaF2] = 4.0×10-11, Ksp[CaCO3] = 8.7×10-9, Ksp[Ca3(PO4)2] = 1.3×10-32..
The molar volume of a certain form of solid lead is 18 cm^3/mol. Assuming cubic closest packed structure, determine the following:
The surface area of an object to be gold plated is 49.7cm2 and the density of gold is 19.3g/cm3. A current of 3.25A is applied to a solution that contains gold in the +3 oxidation state. Calculate the time required to deposit an even layer of gold..
Why is it important to use a large excess of sodium borohydride when doing a reduction in aqueous ethanol. Consider what reaction might occur between water and sodium borohydride.
how many moles of ethylene glycol should be added to the radiator to lower the freezing point of the water from 0 degrees celcius to -18 degrees celcius?
using a solution that is prepared by mixing 11.5 g of c6h12o6 glucoseof mw 180 amu in 279 ml of solution then determine
a gas at 763 mmhg and 31 degrees C occupies a volume of 4.98 L. Calculate its volume at STP in g/mole
Which of the following nuclides have magic numbers of both protons and neutrons: (a) helium-4, (b) oxygen-18, (c) calcium-40, (d) zinc-66, (e) lead-208
After the above reduction is complete, HCl is added to precipitate the crude product. What is the balanced equation showing this reaction. What impurities would be removed from the product upon washing it with ice-cold water
Assume that all ethanol is transformed into CO2 and assume the lake contains 10^8 liters of water. Explain your answer with the chemical reaction involved and any assumptions you make.
Naphthol with diethyl ether, 2-chloro-benzoic acid and then aqueous sodium bicarbonate? Will any substance not do anything
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