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The standard free energy of activation of another reaction B is 78.70 kJ mol-1 (18.81 kcal mol-1). Assume a temperature of 298 K and 1 M concentration. By what factor is one reaction faster than the
Butadiene can undergo the following reaction to form a dimer (two butadiene molecules hooked together). 2C4H8(g) > C8H12(g) The half-life for the reaction at a given temperature is 5.92*10^-2 sec
Identify the group of elements that corresponds to the following generalized electron configuration
Use the values of Ka1 = 0.056 and Ka2 = 5.4 x 10-5 to calculate the [OH-] in a 0.898 M solution of oxalic acid (H2C2O4).
An attempt at synthesizing a certain optically active compound resulted in a mixture of its enantiomers. The mixture had an observed specific rotation of 11.0°. If it is known that the specific
Consider a solution that contains 73.0% R isomer and 27.0% S isomer. If the observed specific rotation of the mixture is -89.0°, what is the specific rotation of the pure R isomer
A 2000kg car accelerates from 20 to 60km/h on an uphill road. Determine the work done by the engine
A projectile is fired in such a way that its horizontal range is equal to 14 times its maximum height. What is the angle of projection
If a pure R isomer has a specific rotation of -152.0°, and a sample contains 71.0% of the R isomer and 29.0% of its enantiomer, what is the observed specific rotation of the mixture
Calculate the acceptance cone angle for a fiber optic cable that has an index of 1.70 for the fiber core and a 1.47 index for the cladding. What is the acceptance cone angle
An infinitely long wire consists of two semi-infinite straight segments connected by a quarter circle bend. find the magnetic field at the center of the circle
What observed rotation is expected when a 1.50 M solution of (R)-2-butanol is mixed with an equal volume of a 0.750 M solution of racemic 2-butanol
The following reaction has an equilibrium constant of Kp = 3.5*10^4 at 1495 K: Br2(g) + H2(g) <-> 2HBr(g). What is Kc for this reaction?
Two soccer players start from rest, 43 m apart. They run directly toward each other, both players accelerating. How much time passes before the players collide
In a shuffleboard game, the puck slides a total of 12 m before coming to rest. what was the initial speed of the puck
A wave traveling in the +x direction has an amplitude of 0.186 m, a speed of 3.27 m/s, Write the equation of the wave
Write equations showing how each of the following weak bases ionizes water to form OH- a) HCO3- b) CH3NH2 Identify all of the phases
The human body has a surface area of approximately 1.8 m^2, a surface temperature of approximately 30 degrees celsius, how many photons per second does the body emit
In the titration of a weak base (0.100 M piperazine, 40 mL) with a strong acid (0.100 M HCl). Calculate the pH values between 0 mL Va and 100 mL in 10 mL steps. The two Ka values of piperazine are 4
Lightning As a crude model for lightning, consider the ground to be one plate of a parallel-plate capacitor, How much charge can the cloud hold before the dielectric strength of the air is exceeded
Write equations and show how the following molecules can be prepared from any organic and inorganic reagents.
An object is 2 m from the front side of a 1 m focal lenth converging lens. A second converging lens with focal length 2 m is placed 1 m from the first on the opposite side from the object. What is t
A) Determine the [OH-] of a 0.16 M ammonia solution. B) Determine the pH of a 0.16 M ammonia solution. C) Determine the pOH of a 0.16 M ammonia solution.
An alpha particle, which is a helium nucleus, has a mass of 6.64*10^-27 kg. It is travleing horizontally at 42.3 km/s when it enters a uniform, What is the diameter of the path followed by the alpha
Write equations showing how each of the following weak bases ionizes water to form OH- a) HCO3- b) CH3NH2 Identify all of the phases in the answer (ex: NH3 = NH3(aq)+H2O(l)<-->NH4+(aq)+OH-(aq)