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A parallel-plate capacitor has circulat plates of 7.00 cm radius and 1.01 mm separation. Calculate the capacitance in picofarads
Write the lewis formula for the reactant and product species in the following chemical equation. Include nonbonding electrons. 2OH yields H2O2.
An ambulance with its siren at frequency 700 Hz is racing down the highway at 50m/s, What is the wavelength of sound in front of the ambulance
A 95.0 N weight is held in the hand. The upper arm makes an angle of 29.0° with the vertical, and the lower arm is 12.0°above the horizontal
What is the value of Kc for the reaction 2A(g) + 3B(g) 2C(g) + D(g) if at equilibrium [A] = 0.60 M, [B] = 0.30 M, [C] = 0.10 M and [D] = 0.50 M? A) 0.088 B) 0.51 C) 2.4 D) 0.15
For a reversible reaction with a one-step mechanism, A B , the rate of the forward reaction is ratef = 3.2 x 10-6 s-1 [A] and the rate of the reverse reaction is rater = 4.6 x 10-4 s-1 [B]. What is
The concentrations of each were then determined as follows: [Fe^3+]= 6.8 x 10 ^-4 M, [SCN ^-]= 3.3 x 10 ^-4 M, [FeSCN ^2+]= 3.0 X 10 ^-5 M. Determine the equilibrium constant for this reaction.
A toroidal solenoid has a mean radius of 18.0cm and a cross-sectional area of 3.20cm2 and is wound uniformly with 85.0 turns. What is the mutual inductance of these coils
A plot of ln [C] versus time is linear for the reaction C ® D. What is the kinetic order of the reaction. A) first B) one-half C) zero
A water slide launches a child horizontally above a swimming pool. How far from the launch point does the child land in the water
If the floor at the base of a table is very hard, and a tennis ball dropped from the top of the table 1 meter high rebounds with 85% of its velocity
The decomposition of dinitrogen pentoxide obeys the rate-law expression rate = 0.080 min-1[N2O5]. If the initial concentration of N2O5 is 0.30 M, what is the concentration after 2.6 minutes
a solid cylinder (M=2.07 kg, R=0.117 m) pivots on a thin, fixed, frictionless bearing. Calculate the angular acceleration of the cylinder
The rate constant for the second order reaction 2NO2 ® N2O4 is 2.79 L/mol ·min at 48 oC. If the initial concentration of NO2 is 1.05 M , what is the half-life? A) 20.5 s B) 10.3 s C) 0.34
The half-life for the reactant A in the first order reaction A ® B is 36.2 seconds. What is the rate constant for this reaction at the same temperature
A bimolecular reaction is found to be 1st order with respect to both reactants. If the rate of reaction is 1.87 mol/L ·s at 25 oC, what is the reaction rate if both reactant concentrations ar
Evaluate the specific rate constant for the reaction at the temperature for which the data were obtained. The rate-law expression is rate = k[A][B]2
A student throws a 100g snowball at 7.5m/s at the side of the schoolhouse, where it hits and sticks. What is the magnitude of the average force on the wall
The gas phase reaction A + B ® C has a reaction rate which is experimentally observed to follow the relationship rate = k[A]2[B]. Which one of the following would affect the value of the specifi
A 78.05kg fisherman is sitting in his 33.25kg fishing boat along with his 13.49kg tackle box. What is the recoil speed of the fisherman and his boat
A hypothetical reaction X + 2Y ® Products is found to be first order in X and second order in Y. What are the units of k, the specific rate constant, if reaction rate is expressed in units of mo
A 9.0-g piece of Styrofoam carries a net charge of -.65mC, What is the charge per unit area on the plastic sheet
A beam of protons at an accelerator creates a current of 120 mu/A. If the beam is focused on a target, how many protons strike the target in 30.0 s
Calculate the potential developed by a voltaic cell using the following reaction if all dissolved species are 0.025 M: 2 Fe2+ (aq) + H2O2 (aq) + 2 H+ (aq) ? 2 Fe3+ (aq) + 2 H2O (l)
A cosmic ray electron moves at 7.85 x 10e6 m/s perpendicular to the earth's magnetic field at an altitude, What is the radius of the circular path the electron follows