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Depict the kekule structure showing all possible resonance structures as well as formal charges. Point out the hybridization of all C and N in each structure.
1. N2H2
2. NO3^-
3. (CH3)3CCO2H
4. CH2CCH2
5. O3
A laser utilized to read CDs emits red light of wavelength 700 nm. Explain how many photons does it emit each second if its power is (a) 0.10 W, (b) 1.0 W
Calculate the energy per mL if the energy per gram for Methanol (MW = 32g) is 0.83 kcal/gram and for Ethane MW
Explain why Markovnikov's rule is needed to predict the products of hydration and hydrohalogenation, but is not needed to predict the products
Calculate delta U of a gas for a proces in which the gas obsorbs 3 J of heat and does 10 J of work by expanding
The reaction of pure (S)-2-chlorobutane with sodium cyanide in dimethylsulfoxide produces pure (R)-2-cyanobutane. Explain why a racemic mixture is not expected for this reaction if it occurs via an Sn2 mechanism.
Calculate empirical formula of this compound & molecular formula and calculate the molality of solution of sulfuric acid?
A 14 mL sample of a solution of AlBr3 was diluted with water to 56 mL. A 25 mL sample of the dilute solution was found to contain 2.31 M Br-. What was the concentration of AlBr3 in the original undiluted solution
A solution of household bleach contains 5.25% sodium hypochlorite, NaOCl, by mass. Assuming that the density of bleach is the same as water,
MgNH4PO4 *6H2O has a solubility of 0.023 g/100mL in water. Suppose a 5.02 g sample were washed with 20mL of water. What fraction of the product would be lost.
a second order reaction in ethanoic solution has a prefactor of 1013 hz and an activation energy of 0.9 ev. draw an
This race is a challenge to the human organism! By what percentage does the oxygen number density decrease between the start and the finish of the race?
at 25c the standard enthalpy of formation of HF(aq) is -320.1 kj/mol. of OH(aq) it is -229.5Kj/mol. of F (aq) it is -329.5 Kj/mol.of H2O(l) it is -286.1Kj/mol.
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