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A 51.0 g sample of ethylene glycol, HOCH2CH2OH, is dissolved in 540.0 g of water. The vapor pressure of water at 32°C is 35.7 mm Hg. What is the vapor pressure of the water-ethylene glycol solution at 32°C? (ethylene glycol is nonvolatile.)
Calculate the activation energy of a reaction if the rate constant is 0.75 s 1at25 Celsius and 11.5 s 1at 75 celsius. (the universal gas constant is 8.314J/mol K)
If the step for digesting the precipitate were omitted, will the reported "percent limiting reactant" in the salt mixture be too high, too low, or unaffected
How many moles of atoms are in each of the following? 4.1*10^24 Pb atoms ,2.15*10^22 He atoms
Acid chlorides are used as electrophiles in the Friedel-Crafts reaction to prepare aromatic ketones. The reaction involves the transfer of an aromatic hydrocarbon with an acyl chloride in the presence of a lewis acid
Erythro-2,3-dibromo-3-phenylpropanoic acid undergoes eliminiation by an E1 pathway in water solvent (Part A conditions),
Why do ldehydes and ketones have lower boiling points than alcohols with similar molar mass?? Why are they higher than alkanes?
Write a balanced, net ionic equation for the precipitation reaction of cacl2 and cs3po4 in an aquaeous solution.
A 0.1000 m aqueous solution of a weak acid, HA, is 1.5% ionized. At what temperature does it freeze? Kf for water = 1.86°C/m.
Designate True (T) or False (F) for each of the following statements and a sample of an optically active substance that consists of a single enantiomer is said to have an enantiomeric excess of 100%.
Hydrogen cyanide (and organic nitriles, which contain the cyano group) can be catalytically reduced with hydrogen to form amines
In the hydrogen atom, for which transition is the emission line observed at shorter wavelength, n=4 to n=2 or n=5 to n=1? Show the equation needed to figure this out. Consider the relative size of delta E to determine the relative wavelength.
The following ions contain the same number of electrons. Rank them in order of decreasing ionic radii. Rank from largest to smallest radius. Cs^+, I^-, Te^2-, La^3+, Ba^2+, and Sb^3-
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