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What is the first step in the reaction sequence of Aldol reactions under basic conditions? a. Removal of the aldehyde proton b. Removal of an alpha proton to form the enolate c. Direct nucleophilic attack of the carbonyl carbon d. Protonation of the carbonyl oxygen
What will be the velocity of the escaping electrons under these conditions? What is the de Broglie wavelength of the escaping electrons?
In trans-1,2-dibenzoylethylene, even though the conjugated C=O group frequency coincides directly with the expected C=C stretching fequency, we would not have expected to observe the late stretching mode in the infrared spectum. Why?
A solution contained KIO3 and excess KI. 25 cm3 of this solution were acidified and the liberated I2 required 26.8 cm3 of 0.1 M Na2S2O3 for complete recaction.
14 g of Si reacts with 16 g of O to produce SiO2, the only product, with no reactant left over. How much SiO2 would be produced from 34 g of Si and excess O?
A proton in a linear accelerator has a de Broglie wavelength of 127 pm. what is the speed of the proton?
A 6.50-g sample of copper metal at 25.0 C is heated by the addition of 84.0 J of energy. The final temperature of the copper is ____ C.The specific heat capacity of the copper is 0.38J/g-K.
Consider the heterogeneous equilibrium process shown below. C(s) + CO2(g) 2 CO(g) At 700.°C, the total pressure of the system is found to be 3.20 atm. If the equilibrium constant KP is 1.52,
A sample of C3H8 Has 3.84X10^24 H atoms. a) how many carbons does the sample contain b) calculate the total mass of the sample
A gas sample containing N2 and O2 was found to contain 72% N2. If the pressure of the sample was 2.0 atm, what is the partial pressure of O2?
Calculate the molar solubility of Cu(OH)2, Ksp = 2.2 × 10-20, in 0.82 M NH3. Don't forget to use the complexation reaction Cu2+ + 4 NH3 ? Cu(NH3)42+, K = 5.0 × 1013.
If 0.088 moles of sulfuric acid is mixed with water to make 411 mililiter of solution, what is the molarity of H+.
Calculate the mass of oxygen (in mg) dissolved in a 5.00 L bucket of water exposed to a pressure of 1.13 atm of air. Assume the mole fraction of oxygen in air to be 0.21
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