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At a certain temperature, 4.0 mol NH3 is introducted into a2.0 L container, and the NH3 partially dissociates by the reactions:2NH3(g) <--> N2 (g) +3H2(g)At equilibrium, 2.0 mol NH3 remains. What is thevalue of K for this reactions?
Yield of Reaction, Propene reacts with hydrobromic acid to yield 2-bromopropane via Markovnikov addition about the double bond of the alkene.
A 10g sample containing an analyte was transferred to a 250 mL flask and diluted to volume. A 10mL aliquot of this solution, diluted to 25mL, yielded a signal of .235 units. A second 10 mL aliquot was spiked with 10mL of 1ppm standard solution of ..
The pKb values for the dibasic base B are pKb1 = 2.1 and pKb2 = 7.8. Calculate the pH at each of the following points in the titration of 50.0 mL of a 0.75 M B(aq) with 0.75 M HCl(aq).
If you have 500 ml of 10% SDS solution, how much SDS needs to be weighed out for 10% at 500ml
Consider a container of volume 2.0 dm3 that is divided into two compartments of equal size. In the left compartment there is nitrogen at 1.0 atm and 25°C; in the right compartment there is oxygen at the same temperature and pressure
If cost per gram were not a concern, which of the following substances would be the most efficient per unit mass for melting snow from sidewalks and roads. Explain.
A sample of 6.022 g of CH4 is enclosed in a 12 L container at 402 K. What is its pressure in atmospheres
The human body obtains 1078 kJ from a candy bar. If this energy were used to vaporize water at 100°C, how much water in liters could be vaporized?
Consider the titration of a 23.0 mL sample of 0.110M HC2H3O2 with 0.130M NaOH. Determine the pH at 6.00 mL of added base.
Calculate the mole fraction of the salt in the solution.
According to the molecular orbital (MO) theory, when atoms bond to form molecules or molecular ions, their electrons are redistributed into molecular orbitals. What is the correct order of the relative energy levels for the molecular orbitals of t..
compound has decomposed. What is the half-life of this reaction assuming first-order kinetics?
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