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A 2.14-g sample of a mixture of KCl and MgCl2 is treated with excess AgNO3(aq). If 5.11 grams of AgCl(s) are obtained, then what is the percentage by mass of KCl in the original mixture?
A volume of 10.0 mL of a .00300 M solution of Cl- ions are reacted with .500 M solution of AgNO3-. What is the maximum mass of AgCl that precipitates in grams.
A Federation starship ( 2.00×106 kg) uses its tractor beam to pull a shuttlecraft ( 2.00×104 kg) aboard from a distance of 15.0 km away. The tractor beam exerts a constant force of 4.0 t
A 10 gram bullet is fired horizontally from a gun and embeds itself into a 50 gram block of wood initially at rest on a wooden horizontal surface. After this collision the wood block slides 100 met
If you start with 5.2x10^-2 M I2 at this temp, how much will remain after 7.68s assuming that the iodine atoms do not recombine to form I2?
A rifle with a barrel length of 57 cm fires a 8 g bullet with a horizontal speed of 370 m/s. The bullet strikes a block of wood and penetrates to a depth of 14 cm. What resistive force (assumed to
A toy car X of mass 0.200 kg moves along a frictionless surface with a velocity of 0.180 m/s. It collides with another toy car Y, with a mass of 0.250 kg and a speed of 0.130 m/s in the same direct
An object has a kinetic energy of 322 J and a momentum of magnitude 26.7 kg·m/s. Find the speed and the mass of the object.
Calculate the concentration of a red dye solution with an absorbance of 0.617. If you have 5.78ml of the solution how many mg of red dye are found in the solution.
If a mass m=.2kg is tied to one end of a spring whose force constant k =80 N/m and whose other end is held fixed what are the angular frequency w the frequency f and period t of its oscillation? If
Two horizontal forces, 236 N and 143 N, are exerted on a canoe. If the these forces are applied in the same directions, find the net horizontal force on the crate
If only 18% of the energy in milk is converted to mechanical work, how high (in meters) can the person climb based on this energy intake?
An object weighing 320 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 250 N. Immersed in oil, the object weighs 290 N. Find the density of the
The leg and cast in the figure below weigh 300 N, with the center of mass as indicated by the blue arrow in the diagram. The counterbalance w1 weighs 135 N. Determine the weight w2 and the angle &al
The 23rd-century starship Enterprise uses a substance called dilithium crystals as its fuel. Assuming this material is the result of fusion, what is the product of two Li-6 nuclei.
A 0.360 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. What is the mass of the sec
A thin brass ring has inner diameter 5.40000cm at 20 celcius and a solid steel rod has outer diameter 5.50050cm at 20 celcius. To what temperature must both be raised so that the brass ring will sli
When it has been dried and weighed, the mass of Ag2CrO4 is found to be 0.310 grams. What is the molarity of the AgNO3 solution?
How long does it take an automobile traveling in the left lane of a highway at 60.0 mi/h to overtake another car that is traveling in the right lane at 40.0 mi/h when the car's front bumpers are ini
At 100 degrees C, the vapor pressure of water, methanol, and ethanol are 760, 2625, and 1694 torr, respectively. Which counpound has the highest normal boiling point? Idk how to answer this questio
Two horizontal forces, 315 N and 145 N are applied to a sled resting on a frictionless skating rink. If they are applied in the same direction, what is the net horizontal force on the sled?
A 0.430- block is attached to a horizontal spring that is at its equilibrium length, and whose force constant is 20.0 . The block rests on a frictionless surface. A 6.00×10-2- wad of putty is
The displacement vector for a 15.0 second interval of a jet airplane's flight is (2150, -2430) m. (a) What is the magnitude of the average velocity?
If 55.6mL of BaCl2 solution is needed to precipitate all the sulfate ion in a 756mg sample of Na2SO4, what is the molarity of the solution?
In this reaction, the colorless NH3 gas is converted to the hard solid, NaNH2. Use Lewis structures to show the difference in bonding between NH3 and NaNH2.