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A solenoid 110 cm long and 2.40 cm in diameter carries a current of 16 A. Find the length of wire forming the solenoid
Balance two of the following redox equations. Identify the oxidation half reaction and the reduction half reaction. Fe^2+ + MnO4_. Fe3+ + Mn2+
Consider a spacecraft in an elliptical orbit around the earth. At the low point, or perigee, of its orbit, it is 300km above the earth's surface; What is the period of the spacecraft's orbit
Suppose that ammonia decomposes at 600 Kelvin to establish equilibrium NH3<--> 1/2N2(g)+3/2H2 for which K=0.395. You have a box volume of 1.00 liter into which you inject 2.65 grams of NH3 at
A fugitive tries to hop on a freight train traveling at a constant speed of 5.4m/s . Just as an empty box car passes him, What is the distance traveled to reach the box car
Pure water, .120 m C6H12O6, .050 m LiBr and .050m Zn(NO3)2....which has the highest vapor pressure, highest boiling point and highest freezing point
A 0.70 kg ball is moving horizontally with a speed of 9.7 m/s when it strikes a vertical wall. What is the magnitude of the change in linear momentum of the ball
Write equations for the half-reactions that occur in the electrolysis of molten potassium bromide.
When electrical current of unknown magnitude is run through the device for 3.50 min, 16.1 mL of water-saturated H_2(g) is collected. The temperature and pressure of the system are 25 degreesCelsius
The lenses of a particular set of binoculars have a coating with index of refraction n = 1.38, and the glass itself has n = 1.52. what is the minimum thickness of the coating
Alpha particles of kinetic energy 5.10 MeV are scattered at 90° by a gold foil. What is the impact parameter
How many minutes will it take to electroplate 26.1 g of gold by running 5.00 A of current through a solution of Au+ (aq)
Two slits spaced 0.500mm apart are placed 78.0cm from a screen. What is the distance between the second and third dark lines of the interference pattern on the screen
Galvanized nails are iron nails that have been plated with zinc toprevent rusting. The relevant reaction is For a large batch of nails, a manufacturer needs to plate a totalzinc mass of 1.70 on the
a mass of 200 g vibrates horizontally in Simple Harmonic Motion with a frequency of 30 Hz and amplitude 20 cm. calculate the total energy of the motion
The item itself serves as the cathode, at which the Au^3+ ions are reduced to Au(s). A piece of solid gold is used as the anode and is also connected to the power source, thus completing the circuit
A radio receiver can detect signals with electric field amplitudes as small as 210?V/m. What is the intensity of the smallest detectable signal
A 0.20M of acetic acid, CH3COOH, at a temperature of 25degC has pH of 2.73. Calculate the hydrogen ion concentration
what products would expect to obtain in the reaction of alpha-naphthaldehyde with KOH? write a detailed reaction mechanism.
The osmotic pressure of a solution containing 26.5 mg of an artificial sweetener per liter is 1.70 torr at 30C. Calculate the molar mass of the compound.
The pulmonary artery, which connects the heart to the lungs, is about 8.0 cm long and has an inside diameter of 5.0 mm. what is the required pressure difference over its length
An industrial flywheel with a moment of inertia of 445kg?m2 rotates with a speed of 6500rpm. How much work is required to bring the flywheel to rest
considering the energetics of change of H and change of S values of solute/solvent interation, solvent/solbent interactions and aolut/solvent interactions
What type of radioactive decay would be expected for the unstable nuclide
Carbon-14 has a half-life of 5730 yrs. A living organism has an activity of 15.2 counts per minute (cpm) per gram of carbon. If a bone is determined to have an activity of 3.80 cpm per gram of carbo