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2NaHCO3 at equilibrium Na2CO3 +CO2 + H2O Kp= 0.23 at 100 degreesC. If a sample of NaHCO3 is placed in an evacuated flaskand allowed to achieve equilibrium at 100 degree
A 15 g bullet is fired into the bob of a ballistic pendulum of mass 1.8 kg. When the bob is at its maximum height, the strings make an angle of 60° with the vertical. The length of the pendulum
Consider the reaction N2 + O2 at equilibriumwith 2NO, for which the Kc =.10 at 2000 degrees C.Starting with the initial concentrations of .040 M of N2and .040 M of O2 determine the
(a) If the two cars collide and stick together their speed just after the collision is (b) What fraction of the initial kinetic energy of the cars is lost during this collision?
The reaction is first order. In an experiment, the initial concentration of cyclobutane was 0.00105M. After heating at 450°C for 455 s, this was reduced to 0.00083 M.
A 2.7-kg block is traveling to the right (the +x direction) at 5.1 m/s, and a second 2.7-kg block is traveling to the left at 1.8 m/s. (a) Find the total kinetic energy of the two blocks.
For the given cost function C(x) = 16\sqrt{x}+{x^2}/{274625} find the marginal cost at the production level 1700. The production level that will minimize the average cost.
Similarly, one additional unit will be occupied for each 2 dollar decrease in rent. What rent should the manager charge to maximize revenue?
A 1600 kg car is moving westward with a speed of 20 m/s, and a 2800 kg truck is traveling east with a speed of 14 m/s. Find the velocity of the center of mass of the system. (Take east to be the pos
He wants to mix 100 pounds of caramels in with chocolates and sell the mixture at $8 per pound. How many pounds of chocolates must he add to the mix to achieve this?
Assume that a 50-kg skater, on level ice, has built up her speed to 30 km/h. How far will she coast beforethe sliding friction dissipates her energy? (Kinetic energy =1/2 mv2) (b) How does the dista
If the angle of depression from the person's eyes to the wreck is 32 degrees, how far away is the accident from the base of the tower?
IF the bug falls from a height of 200 m find the speed with which the bug hits the ground if there is no air resistance.
If CH4 gas and C4H8 gas are released simultaneously at the left and right ends respectively of a 50.0 cm long glass tube, at what distance from the left end of the tube will they meet?
A 60.0 ohm resistor is connected in parallel with a 120.0 ohm resistor. This parallel group is connected in series with a 20.0 ohm resistor. The total combination is connected across a 15.0-V batter
In the diffusion of HCl and NH3, does the first appearance of white smoke indicate the first contact of the NH3 and HCl molecules? If the answer is no, how will it affect the calculated value of the
Find the quadratic function satisfying the given conditions. The axis of symmetry is the line x=1. The y-intercept is 1. There is only one x-intercept.
Two positive charges = = 2.0 are located at = 0, = 0.30 and = 0, = -0.30 , respectively. Third point charge = 4.0 is located at = 0.40 , = 0.What is the net force ((a)magnitude and (b)direction) on
Calculate the molar concentration of oxygen in water at 25 celsius for a partial pressure of 0.22 atm. the henry's law constant for oxygen is1.3 *10 to -3 mol/L*atm
Determine the input that produces the largest or smallest output (whichever is apporpriate). State whether the output is largest or smallest. Complete the square where required.
The LED will only light up if enough electrical current is flowing through it. The amount of current is given by I = V/R, where V is the potential difference. Why does it only light up when it is po
Graph the quadratic equation. Specify the vertex, axis of symmetry, max or min value, and intercepts. Complete the square where needed.
What is the total magnitude of the magnetic flux ( Phi_initial) through the coil before it is rotated?
If the sample was heated to constant weight afterreheating, what is the minimum mass that the sample can have afterthe second weighing? Show how you determined your answer
A 60.0-O resistor is connected in parallel with a 120.0-O resistor. This parallel group is connected in series with a 20.0-O resistor. The total combination is connected across a 15.0-V battery. Fin