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Find out the number of grams of Na2SO4 that can be prepared by the reaction of 7.44 g of NaOH with sufficient H2SO4
buffer that has a pH of 9.80 and an osmotic pressure of 1.04atm at 298 K. What masses of HCN and NaCN should you use to prepare the buffer? mHCN, mNaCN =
What is the solubility of the following compounds in water and ethanol. ethyl acetate, ethanol, silica, azobenzene, azulene, 4(p-nitrophenylazo) resorcinol, methyl red, bromcresol Green
What is the theoretical yield of aspirin if 190 kg of salicylic acid is allowed to react with 128 kg of acetic anhydride?
determine the value Keq at 400K for the decomposition of phosphorus trichloride of [PCl5]=0.135 mol/L, [PCl3]=0.550mol/L.. and [Cl2]=0.550mol/L the equation for the reaction.
Nitrogen dioxide dimerizes to produce dinitrogen tetroxide. Give a possible explanation for why this reaction occurs
In a titration of 29.01 mLs of 0.211 M HCOOH (formic acid, Ka = 1.8x10-4) with 0.255 M KOH, how many mLs of titrant will be required to reach the equivalence point
Suppose that you are performing an extraction of an aqueous solution with an organic solvent that has a density less than water. propose a method to identify and collect only the organic solvent. assume that water and you solvent of interest are n..
In tables of thermodynamic data provided in chemistry books, one finds ?H°f, ?G°f, and S° listed. Briefly, explain why the entropy data are supplied as S°, while the enthalpy and free energy data are in the form of ?H°f and ?G°f, respectively.
What is the concentration of free Ni2+ ions in a saturated Ni(OH)2 solution if the pH is buffered to remain at 8.4? The Ksp of Ni(OH)2 is 6.0 x 10^-16.
The blade of an ice skate is ground to a knife edge on each side of the skate. If the width of the knife edge is 0.001in., and the length of the skate in contact with the ice is 3 in., calculate the pressure exerted on the ice by a 150lb man.
Compound A has a λmax at 232 nm in its UV spectrum but will not react with any dienophile in a Diels-Alder fashion. Provide a structure for Compound A, and explain how you arrived at your decision.
The compounds BR2 and ICl have the ame number of electrons, yet Br2 melts at -7.2 C and ICl melts at 27.2 C. Explain.
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