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What is the first step in an aldol condensation reaction? A. Elimination of hydroxide. B. Bromination of carbonyl compound. C. Addition into the carbonyl. D. Formation of the enolate. E. Protonation of the carbonyl compound.
Identify the mass spectral (MS) peaks you would expect for 4-Heptanone (M+ and m/z for all fragments). Just FYI, the professor said
The substance X is an element which has the elemental form of X(s) at 25oC. The standard enthalpy of formation of HXO4(g) is -818.0 kJ/mol at 25oC. The standard entropy of HXO4 (g) and X(s) are, respectively 175.8 J/mol•K and 30.70 J/(mol•K) at 25..
when 28.0 ml of 0.500 m h2so4 is added to 28.0 ml of 1.00 m koh in a coffee-cup calorimeter at 23.50 degrees celsius
Given the following activation energies, what is the rate constatnt for a catalyzed and uncatalyzed decomposition of hydrogen peroxide(H2O2). Ea(uncatalyzed) 76kJ/mol, Ea(catalyzed) 19JkJ/mol
The products include Cr3+ ion and I2. What was reduced in the reaction and what was the reducing agent?
If a drop of NaOH solution had adhered to the side of the Ehrlenmeyer flask during the standardization of the NaOH solution, how will this error affect the reported MM of the unknown acid( higher or lower than actual value) Explain using mathamati..
Explain what is meant by the discontinuous emission spectra of atoms (seen in flame tests or gas discharge tubes) and how the Bohr (Planetary) and Schrodinger (Quantum-Mechanical) model for electron structure explains these discontinuous spectra
The value of E° for each of the cells is 2.04 V. Suppose that in starting a car on a cold morning a current of 108 A is drawn for 14 seconds from the car battery. How many grams of Pb would be consumed? (M r(Pb)=207.19 g/mol)
The first steps in the radioactive decay of 257Uuh involves the rapid and successive emission of 4 alpha particles
A 2.30 L sample of neon at 5.35 atm is added to a 10.0 L cylinder that contains argon. If the pressure in the cylinder is 7.00 atm after the neon is added, what was the original pressure (in atm) of argon in the cylinder?
A solution is made that is 1.1×10^?3 M in Zn(NO3)2 and 0.150 M in NH3. After the solution reaches equilibrium, what concentration of Zn2+(aq) remains. [Zn2+]
what is the energy of light that is emittted by one iron atom during its decay from an excited state to a ground state
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