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A solution is prepared from 25.0g of benzene, c6h6 and 25.0g of an unknown compound. The freezing point of this solution is 4.3C. The normal freezing point of benzene is -5.12C/m. Determine the molar mass of the compound.
How can I find the pH and volume (mL) of 0.0411M KOH needed to reach the equivalence point in the titration of 23.4mL 0.0390M HNO2? The question doesn't give me a Ka or Kb value.
a pentapeptide is composed of ala cys lys phe and ser. nh2-terminal analysis of the peptide revealed pth-serine.
During the isomerization of trans-1,2-dibenzoylethylene C16H12O2 using 95% Ethanol C2H6O , and UV light irradiation. What is the overall equation for this reaction. What is the product
one of the most famous of the obsolete theories of the hydrogenatom was proposed by bohr. it has been replaced by
How come the reaction of terminal alkynes and alkenes with KMNO4 would yield a carboxylic acid and carbon dioxide. Why woulndn't the reaction yield a carboxylic acid and formic acid
naturally occuring copper contains a miture of 69.09% copper-63 (62.9298 amu) and 30.91% copper-65 (64.9278 amu)
In a particular photoelectron spectrum using 21.21 eV photons, electrons were ejected with kinetic energies of 10.01 eV, 8.23 eV, and 5.22 eV. Sketch the molecular orbital energy level diagram for the species, showing the ionization energies of th..
The letter designations for the first four sublevels with the number of electrons that can be accommodated in each sublevel are what
a mixture of 2.00 moles of h2 3.00 moles of mh3 4.00 moles of co2 and 5.00 moles of n2 exert a total pressure of
A 2.067-g sample of a monoprotic acid was dissolved in water. It took 25.24 mL of a 0.1578 M NaOH solution to neutralize the acid. Calculate the molar mass of the acid.
A 250 g yo-yo is swung on the end of a50 cm string at a constant speed of 4 m/s. What is the centripetal force acting on the yo-yo?
At 0.0 C, if the volume of air is 2 mL and the pressure of the atmosphere that day is 665 mmHg, what is the number of moles of air?
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