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A 1-L flask is filled with 1.25g of argon at 25 °C. A sample of ethane vapor is added to the same flask until the total pressure is 1.10atm . What is the partial pressure of ethane, Pethane, in the
A cylindrical shell of radius 7.00 cm and length 230 cm has its charge uniformly distributed on its curved surface. The magnitude of the electric field at a point 23.0 cm radially outward from its
Find the force that the blood vessel must exert on the drop of blood in part (a)
A snowball is launched horizontally from the top of a building at v = 19.7 m/s. If it lands d = 35.5 meters from the bottom, how high is the building?
Find the maximum linear speed of a person sitting on the merry-go-round 6.50 m from the center. and Find the person's maximum radial acceleration.
What constant acceleration does Mary now need during the remaining portion of the race, if she wishes to cross the finish line side-by-side with Sally?
In a HWE reaction, a 1,2-disubstituted alkene was formed in which the olefinic protons exhibited at vicinal coupling of 9.0 Hz in the 1H NMR. what is the stoichiometry of the double bond?
As a student was swirling the flask, some NaOH solution, from buret, spilled on the bench top. What will the effects be on the calculated molarity of NaOH?
the average adult human male has a total blood volume of 5 liter. if the concentration of sodium ion in this individual is 0.135M, what is the mass of sodium ion circulating in the blood .
what is the molar concentration of chloride ions after 225 ml of 0.625 MKCL are mixed with 615 mlof 0.385M MgCl2? The final volume of the solution is 840ml
A diver stands at the end of of a massless diving board. (a) if the mass of the diver is 134kg and the board is 9m long, what is the torque due to gravity on the diving board with a pivot point at t
A 8.65-L container holds a mixture of two gases at 31 °C. The partial pressures of gas A and gas B, respectively, are 0.206 atm and 0.867 atm. If 0.200 mol a third gas is added with no change in
Element Z has two natural isotopes: Z-79 (78.918 amu) and Z-81 (80.916 amu). Calculate the atomic mass of element Z given the abundance of Z-81 is 49.31%.
A planet with mass 5.98 × 1024 kg orbits a star with mass 1.99 × 1030 kg. Determine the kinetic and potential energy at the aphelion.
A 3.40 kg steel ball strikes a wall with a speed of 9.0 m/s at an angle of 60.0° with the surface. It bounces off with the same speed and angle. If the ball is in contact with the wall for 0.200
What is the amplitude of the temperature fluctuations produced by a sound of intensity, 10 W/m^2, in air at 20 degrees C and std atmospheric pressure?
A motorboat heads due east 13.3 m/s across a river that flows toward the south at a speed of 4.5m/s. What is the magnitude of the resultant velocity relative to an observer on the shore?
A solution, which was made by dissolving 62.07 g of a nonelectrolyte in 500 g of water, exhibits a freezing point of -1.86 °C. What is the molecular weight of this nonelectrolyte compound? For w
Investigators at the scene of an automobile accident where the driver drove off a 20.0 m high cliff determine that the auto was traveling at a speed of approximately 30 m/s upon impact with the grou
Find the following when the current in the solenoid increases to 5.0 A in a period of 0.90 s. the change in the magnetic flux through the coil.
an empty gasoline can with dimensions 19 cm by 47.7 cm by 13.0 cm is attached to a vacuum pump and evacuated. if the atmospheric pressure is 14.7 lb/in^2, what is the total force in pounds on the ou
Consider the three-pulley arrangement shown in the figure below. The three masses m_1, m_2 and m_3 have the values 2.0 kg, 5.0 kg, and 4 kg respectively. All the pulleys are frictionless, and the st
In the course of a titration of barium ion in a sample by sulfate ion in a titration solution, 83.5mL of the .200 M Na2SO4 was required to precipitate all the barium ions. How many grams will the dr
The wires are each 75.0 long and have a mass of 5.50 .If both of them are simultaneously plucked at the center, what is the frequency of the beats that they will produce when vibrating in their fund
Assuming constant specific heats for the air at room temperature, determine the average temperature of the air in 30 min. Assume the air pressure in the room is constant at 100 kPa