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The Wittig reaction involves coupling between a phosphonium ylide and a carbonyl-containing molecule. If a chemist wants to use the Wittig reaction to synthesize 3-methyl-3-hexene, which reactants s
A certain reaction has an activation energy of 61.0 kJ/mol and a frequency factor of A1 = 2.00×10^12M^-1s^-1. What is the rate constant, k, of this reaction at 29.0 degrees celsius
A light of 655 nm is shone onto a metal surface and transfers some of its momentum to the metal. Will the reflecting light have a wavelength greater or less than 655
On planet Zog, Mr. Spock measures that it takes 1.47 s for a mass of 0.50 kg to hit the ground when released from rest from a height of 2.85 m. Calculate the size of the acceleration of gravity on t
Into how many tubes can you dispense 450microliters of buffer using a micropipette set at 2.5 microliters
The intensity (in W/m2) of one sound is 5.46 times as great as the intensity of another sound. what is the intensity level of the louder sound
If you dissolved 0.95g of salt in 100ml distilled water, what is the concentration of salt in this solution in g/ml
Imagine that a chemist has cyclohexanone, triphenylphosphine, butyllithium, and 2-bromobutane. Draw the organic product resulting from using these chemicals in the Wittig reaction.
Find the correlation coefficient for the data and find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days
The standard free energy of activation of a reaction A is 88.3 kJ mol-1 (21.1 kcal mol-1) at 298 K. Reaction B is one hundred million times faster than reaction A at the same temperature.
what is the value of 8.16612667E-008 and 4.6957301E-009? also, how do you write these numbers in scientific notation: -0.0109708572, 0.00274273724, and -10970857.2
The jumping squirrel. A squirrel wants to jump from a point A on a branch of a tree to a point B on another branch. at what angle to the horizontal should he jump
What is the mole fraction of each component if 3.9 g of benzene (C6H6) is dissolved in 4.6. Assuming that this mixture is ideal, that is, it follows Raoult's Law, what is the partial vapor pressure
A heat engine has a maximum possible efficiency of 0.800. If it operates between a deep lake with a constant temperature of 287.0 k, what is the temperature of the hot reservoir
a car traveling due east at 20 m/s reverses its direction over a period of 10 seconds so that it is traveling due west at 20 m/s. find the direction of the car's average acceleration
Explain the general relationship between abstract algebra and linear algebra and dscuss how it is possible to considerably shorten the list of properties that define a vector space by using definitio
What are the concentrations of acetic acid and sodium acetate in a 0.4 M acetate buffer, pH 5.2. The pKa of acetic acid is 4.77.
What three taxa appear in the main window when you first enter the Systematics Lab Room? At what level of classification are these three taxa?
what is the electric force between the proton and electron inside of a hydrogen atom? What must the speed of the electron be
After solving a difficult physics problem, an excited student throws his book straight up. How much time does it take until the book hits the floor
Calculate the pH of a solution prepared by mixing 300 mL of 0.25 M sodium hydrogen ascorbate and 150 mL of 0.2 M HCl plus water to a final volume of one liter. The Ka of ascorbic acid is 5 x 10-5.
A tennis ball gun launches tennis balls at 17.6 m/s . It's pointed straight up and launches one ball; 2.0 s later, What is the second balls' velocity at that point
Two steel guitar strings have the same length. String A has a diameter of 0.59 mm and is under 450.0 N of tension. Find the ratio of the wave speeds
The bulb of the thermometer placed at the head of a distillation apparatus should be adjacent to the condenser. Explain the effects on the temperature recorded if the thermometer were placed (a) bel