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The activation energy for a reaction A ----> B is 114.0 kJ/mol. If a catalyst increases the rate of reaction by a factor of 2.20 × 10^6 at 25.0 oC, what is the activation energy (kJ/mo
A point charge q1 =-5.00 nC is at the point x=1 meters, y=2 meters. A point charge q2=+10 nC is at the point x = 2 meters, y=0. (a) Calculate the electric potential at the origin due to q1.
A projectile of mass 0.831 kg is shot straight up with an initial speed of 28.9 m/s. If the projectile rises to a maximum height of only 7.27 m, determine the magnitude of the average force due to a
The specifictaions associated with a commercial spectrophotometer are: Diffraction grating with 600 groves per mm. Focal length,f, 330nm. Blaze angle, first order, 500nm. What is the reciprocal of t
How can you relate the flow of electrical current through a resistor to the production of thermal energy? Describe what happens on an atomic and molecular level.
A projectile of mass 0.831 kg is shot straight up with an initial speed of 28.9 m/s. (a) How high would it go if there were no air resistance?
An interference filter has an effective bandwidth of 10nm. Would it be feasible to employ such a filter to isolate the calcium emmission line at 422.7nm from the potassium emmission line at 404.4nm?
A 0.15 kg particle moves along an x axis according x(t) = -13 + 2t + 4t2 - 3t3, with x in meters and t in seconds. Give an expression for the (a) x, (b) y and (c) z components of the net force (in N
A current of 0.500 A is passed through an electrolytic cell containing molten MgCl2 for 2.00 h. Calculate the quantity of Mg metal formed at the cathode.
How high was the bridge? (Include any formulas/equations used, show your substitution into any formula/equation used, and show the answer resulting from your substitution into any formula/equation u
You accidentally poured salt into your large grind pepper shaker. This is the only pepper you have left and you need it to cook a meal, but you dont want the salt to be mixed in.
When you last stopped, you noticed that the snow was coming down vertically, but it is passing the windows of the moving car at an angle of 34{\rm ^\circ} to the horizontal. (a) Estimate the speed o
The general guideline for the onset of plastic deformation is a strain of 0.10%. What force is required to induce such a plastic deformation in a 0.50 cm diameter nickel rod?
A metal sphere of radius a is surronded by a metal shel of inner radius b and outer radius R. the flux through a spherical gaussian surface just outside radius R is 2Q/e, and the flux through a sphe
A solution of KOH is prepared and is standardized against 0.5418 g of KHP. The phenolphthalein endpoint was reached by the addition of 25.91 mL of KOH. What is the molarity of KOH solution?
A point charge with charge = 4.00 is held stationary at the origin. A second point charge with charge = -4.10 moves from the point ( 0.105 , 0) to the point ( 0.270 , 0.245 ). How much work is done
A 10ml sample of pure Orange Juice was diluted with 40ml of metaphosphoric acid solution. Then 10ml of diluted juice was titrated to an endpoint with 9.27ml of DCIP.
A rowboat crosses a river with a velocity of 3.95 mi/h at an angle 62.5° north of west relative to the water. The river is 0.605 mi wide and carries an eastward current of 1.25 mi/h. How far ups
As the bus rounds a flat curve at constant speed, a lunch box with a mass of 0.530 suspended from the ceiling of the bus by a string of length 1.79 is found to hang at rest relative to the bus when
The reaction of dinitrogen pentoxide with ammonia to form water vapor and nitrogen is hypothetical in the gas phase because at temperatures greater than 200k, dinitrogen pentoxide readil converts to
Determine the spatial separation between the two isotopes after they have traveled through a half-circle.
At a given temperature, the equilibrim constant for the system studied in this experiment is 1.4e2. Suppose 100.0ml of 2.00e-3M KSCN was mixed with 100.0ml of 2.00e-3M Fe(NO_3_)^3.
A hurricane wind blows across a 7.0 m multiplied by 10.0 m flat roof at a speed of 120 km/hr. (Take the density of air to be 1.28 kg/m3.) (a) What is the pressure difference?
For each of the motions described below, determine the algebraic sign (+, -, or 0) of the velocity and acceleration of the object at the time specified. For all of the motions, the positive y axis i
A reaction vessel of volume 20.0 L contains 5.0 mol of nitrogen gas, 3.0 mol of hydrogen gas, and 2.5 mol of oxygen gas at 298 K initially. The gases react forming NH3(g) ammonia and H2O(l) water.