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calculate the pH of a 0.10M solution of hypochlorous acid. ka for hypochlorous acid is 3.5x10^-8
wo converging lenses are placed 60.0 cm apart. The intial object is placed 28.7 cm in front of the first lens. what is the total linear magnification for the system
Propane (C3H8) is burned in oxygen to produce carbon dioxide and water. The heat of combustion of propane is -2012 kJ/mole. How much heat is given off when 3.0 mol C3H8 are reacted with 10.0 mol O2
A certain superconducting magnet in the form of a solenoid of length 1.10 m can generate a magnetic field of 11.0 T in its core when its coils carry a current of 85 A. Find the number of turns in th
A sample of nitrous oxide gas, N2O in a nonrigid container at a temperature of 33C occupies a certain volume at a certain pressure. What will be its temperature in degree Celsuis in each of the foll
A mechanic pushes a 3.20 X 10^3 kg car from rest to a speed of v, doing 5,100 J work in the process. find the horizontal force exerted on the car
A block of mass m=3.15kg is pushed a distance d=2.05m along a frictionless horizontal table by a constant applied force of magnitude F=16.0N directed at an angle Theta=38.0 degrees below the horizon
A sledge loaded with bricks has a total mass of 18.1 kg and is puled at a constant speed by a rope inclined at 19.0^above The horizontal. determine the mechanical energy lost due to friction
how many mL of 0.294 m sulfuric acid would it take to neutralize 61.71 mL of 0.519 M sodium hydroxide
Provide three balanced chemical equations that will precipitate Pb2+ from a solution. Exclude substances containing chloride or chromate ions
Discuss your ideas for how security in a courthouse or justice center needs to be managed when proceedings are going on not only in courtrooms but also in other areas of the facilities, such as vaca
A camera with interchangeable lenses is used to photograph a distant object. The angular size of the object is 27 degrees. What is the longest focal length lens
In an RLC circuit, the following three elements are connected in series: a resistor of 45.0 ?, a 21.0-mH inductor, and a 0.450-µF capacitor. Find the power factor for the RLC series circuit
A sample of an unknown gas effuses in 11.9 min. An equal volume of H2 in the same apparatus at the same temperature and pressure effuses in 2.19 min. What is the molar mass of the unknown gas
Now suppose the gliders in the previous problem collide completely inelastically so that they stick together rather than rebounding off each other after they collide. Compare the initial and final k
You throw a ball with mass 0.40 kg against a brick wall. It hits the wall moving horizontally to the left at 30. m/s, find the average horizontal force the wall exerts on the ball during the impact
What product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid, assuming that it reacts by the same mechanism as the trans acid
What are the Sum of Squares between (SSB) and what is the degress of freedom within (dfW)
1.00 mol HF and 0.500 mol NaOH are both dissolved in water making 1.00L solution. Calculate the pH of the solution
A 1.50-m-diameter MRI solenoid with a length of 2.20m has a magnetic field of 1.60T along its axis. find the emf in one turn of the solenoid's windings
A coil of wire has a resistance of 38.0 ? at 25° C and 43.7 ? at 56° C. What is the temperature coefficient of resistivity
Standard solutions of calcium ion are suually prepared by weighing an apporpriate amount of primary standard grade calcium carbonate, dissolving it in concentrated HCl, and diluting to the appropria
To determine the muzzle velocity of a bullet fired from a rifle, you shoot the 3.71-g bullet into a 2.45-kg wooden block. find the velocity of the bullet on leaving the gun's barrel
A ball falls straight down onto a wedge that is sitting on frictionless ice. The ball has a mass of 3.21 kg, what is the velocity of the ball after the collision
Draw structure of the product(s) (show stereochemistry) of bromine addition to fumaric acid assuming that bromine adds to this compound the same way it does to cinnamic acid.