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An aqueous solution containing 9.03 g of an optically pure compound was diluted to 200.0 mL with water and placed in a polarimeter tube 20.0 cm long. The measured rotation was -2.85° at 25 °
A uniform electric field of magnitude 435 N/C pointing in the positive x-direction acts on an electron, which is initially at rest. The electron has moved 3.10 cm. What is the change in potential en
Determine the delta G associated with the dissociation of 5.0g of C76H52O46 at room temperature in 50mL of pH=7.55 buffered solution that has already had 2.5g C76H52O46 dissolved into it.
Suppose that ammonia decomposes at 600 K to establish the equilibrium NH3(g) 1?2 N2(g) + 3/2 H2(g) for which K =0.395. You have a box of volume 1.00 liter into which you inject 2.65 g of NH3 at 600
A block of mass m1 = 2.00 kg on a frictionless inclined plane of angle 32.0° is connected by a cord over a massless, frictonless pulley to a second block of mass m2 = 2.00 kg hanging vertically.
How does nuclear magnetic resonance imaging allow us to see inside human bodies? In what other ways do you think this technology could be used?
A diesel engine weighing 20.5 ton (1 ton = 1000 kg) is at rest on a track inclined at an angle of 7.5°. Five cars, each weighing 2.4 ton, are coupled to the engine through steel wires. Find the
The structure of the human genome was elucidated in 2000. Many scientists and business professionals describe the achievement as a turning point.
Gasoline is composed of hydrocarbons. Which additive, ethanol or MTBE, is more compatible (similar) with gasoline? Why?
At this time, when the tail of the ship is beside us, what does the clock in the tail read?
Baseball reporters say that long fly balls that would have carried for home runs in July "die" in the cool air of October and are caught. The idea behind this observation is that a baseball carries
The disk of the Milky Way is about 105 light years in diameter. A cosmic-ray proton enters the galactic plane with speed v = 0.99c. How wide is the galaxy to the proton (in its direction of motion)?
Research recently reported the first optical atomic trap. In this device, beams of laser light replace the physical walls of conventional containers. T
Using a ground-based telescope and a spectrometer, it has been found that sodium vapor is a major component of the thin atmosphere of Mercury.
If you were to walk briefly in space without a spacesuit while far from the Sun (as an astronaut does in the movie 2001,A Space Odyssey), you would feel the cold of space-while you radiated energy,
Sodium hydroxide can be used as a standarized basic solution. Could another base such as potassium hydroxide KOH be used instead? What would the consequences be?
How much energy must the water transfer to its surroundings in order to freeze completely? The specific heat of water is 4186 J/kg·K, and the latent heat of fusion is 333 kJ/kg.
A conducting solid sphere of radius 20.0 cm is located with its center at the origin of our three-dimensional coordinate system. A charge of 0.429 nC is applied to the sphere.
Compute the force of the ground on his feet if he jumps stiff-legged, the ground compresses 2.10 cm, and the compression of tissue and bones is negligible.
If they are positioned so they form a circle but do not touch and have opposite charges of +4.91 µC and -4.91 µC, find the magnitude of the electric field at the center of the composite
Consider an electric dipole on the x-axis and centered at the origin. At a distance h = 22.9 cm along the positive x-axis, the magnitude of electric field due to the electric dipole is given by k(2q
A +1.33 nC point charge is placed at one corner of a square (1.90 m on a side), and a -5.91 nC charge is placed on the corner diagonally opposite. What is the magnitude of the electric field at eith
A car decelerates uniformly and comes to a stop after 10 s. The car's average velocity during deceleration was 50 km/h. What was the car's deceleration while slowing down?
A speeding motorist passes a stopped police car. At the moment the car passes, the police car starts from rest with a constant acceleration of 4.28m/s^2. the speeding motorist coninues with a consta
A fully charged battery allows the shaver to be used for its maximum operation time, during which 2.91 x 1022 of the charged particles pass between the terminals of the battery as the shaver operates