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A 2L jar, equipped with a tight-fitting lid that contains a rubber septum, is half filled with water. At equillibrium, the air space has a volume of 1L, a total pressure of 1atm, and a temperature of 298K. Then 1mg of formaldehyde(HCHO, MW=30g/mol) is injected through the septum into the water. Some of the formaldehyde escapes into the gas phase. Consider the situation when a new equilibrium is established. Determine the equilibrium mole fraction of HCHO in air.
If 85.00% reaction is required to obtain a noticeable color from the formation of the Cr(SCN)2+ ion, how many hours are required
Calculate the entropy change associated with the isothermal expansion of 5.40 mol of ideal gas atoms
Suppose you had samples of 1-bromo-3-methylbutane and 2-bromo-2-methyl butane. Choose reaction conditions that will enhance the rate of substitution and decrease the rate of elimination for each.
what will be the temperature of the system when equilibrium is established? Â (sp Heat of H2O(s) = 2.09j/g . c (sp heat of H2O (l) = 4.18 J/g.c) Heat of Fus. of H2O(s)=333j/g
From the composition of lignite coal, calculate the mass of sulfuric acid that could potentially form as acid rain from burning
a compound called pyrene has the empirical formula c8h5 . when 4.04 g of pyrene is dissolved in 10.00 g of benzene the
What's the volume of hydrogen that can be produced during the reaction of 25 g of iron with excess water, at 100 °C and 150 kPa, taking into account the following equation
What is the partial pressure of He in a container that is at a total pressure of 2.33 atm and contains
What kinds of compounds are suitable to be separated and analyzed by TLC. gases volatile liquids solids two of the above(which) all of the above
what was the original total concentration of cesium and the corresponding radioactivity in Ci/L?
Determine the volume of 0.890 M NaOH needed to reach the equivalence point in the titration
For each reaction, identify the acid-base conjugate pairs. Then rank all reactions in order of increasing tendency for the reaction to go to completion (to the right).
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