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write a chemical reaction for this process. If a sample of the supernatant from the reaction above were used as part of a half cell along with a zinc electrode and the other half-cell was a standard
A yo-yo has a rotational inertia of 970 g·cm2 and a mass of 104 g. Its axle radius is 3.15 mm, What is the magnitude of its linear acceleration
What is the pH of a 0.15 M solution of aqueous Acetic Acid. The Ka of acetic acid is equal to 1.7 x 10^-5
A solution has a hydronium ion concentration of [H3O+] = 5.3 x 10^-4 Determine the pH of this solution.
A 878 kg car has four 11.8 kg wheels. When the car is moving, what fraction of the total kinetic energy of the car is due to rotation of the wheels about their axles
A point is located at r = 42mmi - 71mmj + 90mmk. It is first rotated about the x-axis by +82o, and then rotated about the z-axis by -35o
We place the 2.00M HCl into the buret tube. Next we place 30.0 mL of the KOH unknown Molarity solution into a small flask and add some phenolphthalein indicator turning the solution an intense pink
One end of a long rod (n=1.5) is formed into a convex surface with a radius of curvature of 6cm. Find the image and object focal lengths, f' and f, and mark the locations of the foci in your to-scale
In a phyiscs lab experiment, a coil with 200 turns enclosing an area of 13.7cm2 is rotated during the time interval 3.7E-2 from a position, What is the magnitude of the total magnetic flux
a 0.0571g sample of platinum sulfate was dissolved in dilute HCl and treated with 10% BaCl2 solution. The BaSO4 precipitate weighed 0.0801g. Determine the formula of this sulfate of platinum. The at
Power lines at 20,000V (rms) are connected to a utility pole transformer. Find the ratio of the number of turns in the primary to the number of turns in the secondary
Rates of reactions: Rate = k [A]^m [B]^n where the reaction time = 1 / Rate. Two chemical experiments were performed to determine the exponent "n". (We will assume that "m" is known).
A circular loop of flexible iron wire has an initial circumference of 169cm but its circ. is decr. Find the magnitude of the emf induced in the loop after exactly time 5.00s has passed since the circ
The sulphate ionis trapped as water-insoluble BaSO4. The quantity ofBaSO4 obtained is 0.2070g. What is the mass percent ofsaccharin in the sample of sweetener
A compound is found to contain 64.80 % carbon, 13.62 % hydrogen, and 21.58 % oxygen by weight. What is the empirical formula for this compound
A tank circuit in a radio transmitter is a series RCL circuit connected to an antenna. find minimum and maximum inductance of the tank circuit
An equilateral triangle has sides of lengthL. Charges of +Q,-2Q,and +3Q are placed at the vertices. Find the electric field midway between the two positive charges
The international space station is orbiting at an altitud of 370km above earth's surface. The mass of the earth is 6x10^24kg, Assuming a circualr orbit, whit is the orbital speed of the space station
What is the approximate radius of Earth? Its mass is 6.0*10^24 kilograms and the acceleration due to gravity at its surface is 9.8 m/s2
A cart of 0.5 kg hits a fixed cart of 1.5 kg with a velocity of 3 m/s in the north direction. Both carts get stuck together and move, What is the direction of the velocity vector
A helicopter, starting from rest, accelerates straight up from the roof of a hospital. The lifting force does work in raising the helicopter. What is the average power generated by the lifting force
A 2000 kg elevator initially is moving with speed 2 m/s as it passes the 5th °oor. How much work is done by nonconservative forces during the 10 second interval
Consider 3 Resistors: 10 k?, 20 k?, and 30 k?. Calculate the total resistance if the resistors are connected in series with each other
A .060-kg tennis ball, initially moving 5.50 m/s, has a head on collision with a .090-kg ball initially moving in the same direction, determine the Speed and direction of each ball after collision
A compound is found to contain 10.37 % phosphorus, 4.689 % nitrogen, and 84.95 % iodine by weight. What is the empirical formula for this compound