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A reaction mixture contains 0.41 M I2, 0.27 M Br2 and 3.5 M IBr. Which of the following statements is TRUE concerning this system. I2(g) + Br2(g) 2 IBr(g) Kc = 1.1 × 102
A soccer ball is kicked with an initial horizontal velocity of 18.0 m/s, find How far from where it was kicked will the ball land
The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 long. What is the acceleration of the bullet while it is in the barrel
Determine the value of Kc for the following reaction if the equilibrium concentrations are as follows: [HCl]eq = 0.13 M, [HI]eq = 5.6 × 10-16 M, [Cl2]eq = 0.0019 M.
A 1200 kg car rounds a corner of radius r = 45m. If the coefficient of static friction between the tires, what is the greatest speed the car can have in the corner without skidding
a 25.0g sample of calcium chloride is dissolved in water to give 6.52 * x10^2 ml of solution. What is the concentration of the resulting solution in calcium, and what is the total ion concentration
Listed below are the forces that were applied to the cart in these three runs. Run Force (N) Run = 1(diamonds), Use Newton's second law to estimate the mass of the cart in kg from this set of dat
A 3 kg block moves down a hill that makes a 40° angle with the horizontal direction, what is the magnitude of the acceleration of the block
Some chambers used to grow bacteria that thrive on co2 have a gas mixture consisting of 95% co2 and 5% o2 what is the partial pressure of each gas if the total pressure of each gas if the total pres
If the wavelength of ultrasound in soft tissue is 0.308 mm, what is the frequency producing this wavelength
The reaction below reaches equilibrium in a closed reaction vessel. The enthalpy change for the forward reaction is +135 kJ/mol. Does the mass of Na 2 CO 3 increase, decrease or stay the same if the
A soccer ball is kicked with an initial horizontal velocity of 18.0 m/s, find the maximum height the ball goes above the ground
Three light bulbs each with a resistance of 50W, are connected in series to a 100 V power supply, find the current flowing through the third light bulb
K = 0.040 for the reaction below at 450C. If the reaction starts with .20M Cl2 and .20M PCl3 what concentration of PCl5 will be present at equilibrium PCl5(g) <----------> PCl3(g) + Cl2(g)
An air-filled parallel-plate capacitor has plates of area 2.10 cm2 separated by 0.50 mm. The capacitor is connected to a 3.0 V battery. What is the charge on the capacitor
Two metal spheres, each of mass 14 g and initially at rest, are dropped from a height of 6 m in an evacuated chamber. Find the difference in final speeds of the two spheres
Consider a region of space with volume 32 mm3. Suppose the energy stored in the electric field of that particular region of space is 87 J. evaluate the average electric field strength in this region
At 40oC, Kc=0.0303 for the reaction below. H2 + Cl2 --> 2 HCl In an experiment carried out at 40oC, the initial concentrations were [H2]=[Cl2]=[HCl]=2.25 mol/L. What is the equilibrium concentrat
What is the value of the reaction quotient (Qc ) for the reaction below if a 2.75-L flask contains 0.0282 mol NO2(g) and 0.612 mol N2O4(g) at 25°C
Write the formula for ionic compound formed from acetate anion ch3coo and each cation. Na, Ba, Al, Ni
By what factor does the reaction rate increase at 25oC when the catalyst is used. Assume that the Arrhenius pre-exponential factor, A, is the same for the catalyzed and uncatalyzed reactions.
A 1.5-m-diameter vat of liquid is 2.3m deep. The pressure at the bottom of the vat is 1.3atm What is the mass of the liquid in the vat
For the elementary process below, the activation energy is 27 kJ/mol and the enthalpy change is -20 kJ/mol. What is Ea for the reverse process, in kJ/mol
A zero-order reaction has a constant rate of 4.60×10?4 M/\rm s. If after 70.0 seconds the concentration has dropped to 6.50×10?2 M, what was the initial concentration
A migrating bird is initially flying south at 10 m/s. To avoid hitting a high-rise building, What is the bird's average acceleration during this 2 s interval