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How long would it take (in seconds) to deposit 1.97 g of copper from an aqueous solution of copper(II) sulfate by passing a current of 2.44 amperes through the solution?
The total race is fifty meters long. If the total race is run in 6.32 s, How far does he run during the acceleration phase?
A projectile is fired horizontally with an initial velocity of 9.00 m/s near the earth's surface. Assume that the projectile does not collide with anything. a. What is the horizontal displacement of
How many grams of solid ammonium chloride would you have to add to2.5 L of .125 M NH3 to obtain a buffered solution of pH= 8.350? (Kb of NH3 = 1.8 *10-5)
An interstellar dust grain, roughly spherical with a radius of 3e-07 m, has acquired some negative charges such that the potential on its surface relative to infinity is -16 V. Assuming that the cha
Determine the empirical formula of a 100 g sample of acompound found to contain 63.50 g of silver. 8.25 g of nitrogen,and the remainder of oxygen.
A sample of gas collected over water at 42 degrees celsiusoccupies a volume of one liter. The wet gas has a pressure of0.986atm. The gas is dried, and the dry gas occupies 1.04L with apressure of 1.
(a) What is the angular speed of the rod just before it strikes the floor? (b) What is the magnitude of angular acceleration of the rod just before it strikes the floor?
Suppose the cannon is then unbolted from the earth, and no external force hinders its recoil. What would be the velocity of a shell fired from this loose cannon?
Nitroglyerine is an explosive used by the mining industry. It detonates according to the following equation:4C3H5N3O9(l)→ 12CO2(g) + 6N2(g) +10H2O(g) + O2(g) what volume is occupied by the gases
You have analyzed a 25.00 mL sample of fruit juice, which you titration with a 0.009986 M iodine solution. Your initial buret reading is 15.28 mL and your final buret reading is 20.12 mL.
What time is required to fully discharge the capacitor? The capacitor is fully discharged when the charge is less than 0.01 % which roughly corresponds to a time of 10t.
What is the maximum distance that the plane can travel due west and just be able to return home?
A ball of mass 0.075kg is fired horizontally into a ballistic pendulum of mass 0.350kg and sticks. The pendulum was originally at rest. The center of mass rises a vertical height of 0.145m. What is
A 0.940 kg ball is dropped from rest at a point 4.50 m above the floor. The ball rebounds straight upward to a height of 3.50 m. Taking the negative direction to be downward, what is the impulse of
A ball is tossed straight downward from an initial height of 15.00m and strikes the ground at a speed of 11.27m/s. Calculate the speed at which it was thrown.
In an elastic collision, is the total kinetic energy the same before and after the collision? In an inelastic collision, is the total kinetic energy the same before and after the collision? What kin
If a 0.20 mole sample of AgNO3 is dissolved in 0.500 Lof 1.0M NaCN, and 0.20 mole of NaCl is added, what will be the solubility quotient and will precipitation occur?
Consider the strong electrolyte, MX, wich dissociates into M+ and X- ions upon dissolution in water. If the mobility of M+ is 1.866 times that of X-, What percentage of the current is c
An 11-mm wide diffraction grating has rulings of 890 lines per mm. Light is incident normally on the grating. The longest wavelength that forms an intensity maximum in the fifth order is closest to?
A. A certain weak acid HA with Ka = 5.61 x10-6 is titrated with NaOHA solution is made by mixing 9.0 mmol of HA and 1.0 mmol of the strong base. What is the resulting pH? I got pH = 4.35 which
A person (weight W = 578 N, L1 = 0.835 m, L2 = 0.399 m) doing push-ups. Find the normal force exerted by the floor on each hand and each foot, assuming that the person holds this position.
What is the minimum concentration of NH3 required to prevent AgBr(s) from precipitating out of a solution containing 0.01M AgNO3 and 0.001MNaBr?
A ceiling fan is turned on and a net torque of 2.1 N · m is applied to the blades. The blades have a total moment of inertia of 0.24 kg · m2. What is the angular acceleration of the bl
Two cars, A and B, are traveling in the same direction, although car A is 180 m behind car B. The speed of A is 27.3 m/s, and the speed of B is 18.6 m/s. How much time does it take for A to catch B?