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An unknown compound shows a weak molecular ion at m/z 87 in the mass spectrum, and the only large peak is at m/z 30. The IR spectrum appears below. The NMR spectrum shows only three singlets: one of area 9 at 0.9 ppm, one of area 2 at 1.0 ppm, and one of area 2 at 2.4 ppm. The singlet at 1.0 ppm disappears on shaking with D2O. Determine the structure of the unknown compound.
What is the initial mole of Aniline? what is the initial mole oh HNO3 if 40mL of the acid was used in the titration
what do the bond angles of water suggest about the hybridization state of the oxygen atom of water?
Based on the standard reduction potential, which species is oxidized when current is allowed to flow? B. Calculate the value of Q, the reaction quotient, for this cell reaction. C. Calculate the actual cell potential at 25 degrees C.
A 1.90 g sample of a large boimolecule was dissolved in 11.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C. Calculate the molar mass of the biomolecule
a reaction has a standardfree-energy change of -13.00 kj mol -1 -3.107 kcal mol -1 calculate the equilibrium constant
.134 mole of KCl and .212 mole of CaCl2 were dissolved in water, calculate total number of Cl ions in the solution
What is the purpose of adding sodium sulfate to the organic layer after all of the extractions are complete?
when quantifying the properties of any object or event in the environment the measurements are made on one of the four
Write the chemical equation describing solubility equilibrium and the solubility product constant expression for Cu(IO3)2(s) and Ba3(PO4)2(s)
If 16.76 mL of an aqueous solution of NaOH reacts with 0.5683 g of KHC8H4O4, how many moles of NaOH reacted. What is the concentration of the NaOH solution
What is the pH of the solution halfway to the equivalence point. What is the pH of the solution at the equivalence point
The type of enzyme regulation where a regulatory molecule binds to the enzyme and changes the shape of the active site is called
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