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The question is to write a mechanism for the reaction of acetophenone with an excess of ethyl magnesium bromide in the presence of hydrochloric acid.
a hypothetical ax type ceramic material is known to have a density of 2.10gcm3 and a unit cell of cubic symmetry with a
Determine which of them exhibit resonance. (In other words, which of the following molecules exhibit resonance? Note: there is more than one answer and you must choose all of the molecules in the list that exhibit resonance.)
4-methoxybenzoic acid is a weaker acid than benzoic acid, but methoxyacetic acid is a stronger acid than acetic acid. Explain this apparent contradiction.
Redox titrations are used to determine the amounts of oxidizing and reducing agents in solution. For example, a solution of hydrogen peroxide,H2O2 , can be titrated against a solution of potassium permanganate,KMnO4
If you have 15mL of 0.1 M NaC2H3O2, and the pH is 7.0. What would the Kb be for this reacton
from the equation C2H5OH + 3O2 --> 2CO2 + 3H2O, how many mols of ethanol are needed to use up 3.24 mols of oxygen?
Calculate the number of grams of urea that must be added to 150 g water to give solution whose vapor pressure is 2.5 mmHg less than that of pure water at 40 degrees C
heat of solution of lithium carbonate is -3.06 kJ/mol solute in 200 moles H2O. What effect would you expect increased temperature to have on the concentration of Li2CO3? Explain
How much Fe++ could be present in water containing 0.4 x 1e-02 M HCO3- (bicarbonate) without causing the precipitation of FeCO3 (Ksp=10**(-10.7))
Which monatomic ion has a charge of 1+ and the electron configuration [Kr]4d105s2? Write the element symbol and charge.
What happens to the voltage of this cell as the cell is discharged? Why? a. Voltage increases b. Voltage remains the same c. Voltage decreases d. because product concentrations are increasing
Calculate the proton motive force across the inner mitochondrial membrane a 25 degrees C when theelectrical difference is -0.18 V (inside negative), pH outside us 6.7, and pH inside is 7.5.
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