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If a molecule of HCl diffuses a certain distance in 3700 s, how long (s) would it take a molecule of NO to diffuse the same distance at the same temperature and under the same conditions?
At what distance from Titan should the gravitational pull of Titan just balance the gravitational pull of Saturn?
Suppose the force between two charged objects separated by a distance r is + 12 N. If their distance apart were doubled, what would be the new force and how do you determine if it is attractive or r
If you stacked Avogadro's number of pennies one on top of theother on Earth's surface, how far would the stack extend (inkm )? [For comparison, the sun is about 150 million km from Earth and the nea
The total charge on the conducting spherical shell is -Q. (Assume the potential is zero very far from all charges. Use a, b, c, k, and Q as necessary.) (a) What is the electric potential of the sphe
The mass ratio of sodium to fluorine in sodium fluoride is 1.21:1.A sample of sodium fluoride produced 28.1g of sodium upon decomposition. How much fluorine (in grams) was formed?
A flat surface of area 3.30 m2 is rotated in a uniform electric field of magnitude E = 7.05 x 105 N/C. Determine the electric flux through this area when the electric field is perpendicular to the s
If you weigh 670 on the earth, what would you weigh on the surface of a neutron star that has the same mass as our sun and a diameter of 20.0 ?
A sphere of mass 2.5 multiplied by 10-4 kg is suspended from a cord. A steady horizontal breeze pushes the sphere so that the cord makes a constant angle of 33° with the vertical. (a) Find the m
Describe the 5 traits that characterize modern vascular plants.Explain how these characteristics have contributed to their successon land.
A capacitor is connected in series with a 275 ohm resistor. When a switch is closed on a 1.50 V battery connected in series with these components, the capacitor's potential difference increases to 0
A 24.0 kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 88.5N and is directed at an angle of 30.0degress above the horizontal. Determi
What are approximate simple harmonic motion and exact simple harmonic motion and why exactly simple harmonic motion and exact simple harmonic motion and why exactly simple harmonic motions are rare?
Lithium would be the least expected to undergo a reaction with chlorine gas. Write a balanced chemical equation for the reaction.Express your answer identify all the phases.
A 1543-kg submarine rises straight up toward the surface. Seawater exerts both an upward buoyant force of 14,687 N on the submarine and a downward resistive force of 1007 N. What is the submarine's
A worker stands still on a roof sloped at an angle of 34.3° above the horizontal. He is prevented from slipping by a static frictional force of 415 N. Find the mass of the worker.
Calculate the solubility of carbon dioxide in g/L at 20C in a closed container of water if the partial pressure of CO2(g) is 3.6atm. Henry's constant is 0.023 mol/L atm for Co2(g) at 20C.
Three forces act on a moving object. One force has a magnitude of 86.0 N and is directed due north. Another has a magnitude of 61.0 N and is directed due west. What must be the magnitude and directi
Benzene (C6H6) burns in air to producecarbon dioxide and liquid water. Calculate the heat released (inkilojoules) per gram of the compound reacted with oxygen.
Traveling at a speed of 17.9 m/s, the driver of an automobile suddenly locks the wheels by slamming on the brakes. The coefficient of kinetic friction between the tires and the road is 0.800. What i
A 25.0-kg sled is being pulled across a horizontal surface at a constant velocity. The pulling force has a magnitude of 77.5 N and is directed at an angle of 30.0° above the horizontal. Determin
Given that the heat of fusion of water is -6.02 kJ/mol, that the heat capacity of H2O(l) is 75.2 J/mol K and that the heat capacity of H2O (s) is 37.7 J/mol K, calculate the heat of fusion of water
A Mercedes-Benz 300SL (m = 2000 kg) is parked on a road that rises 15° above the horizontal. (a) What is the magnitude of the normal force?
The book weighs 32 N. The coefficient of static friction between his hands and the book is 0.45. To keep the book from falling, what is the magnitude of the minimum pressing force that each hand mus
A solution of acetic acid isprepared in water by adding 11.1g. of sodium acetate to a volumetric flask and bringing the volume to 1.0L with water. The final pH is measured to be 5.25.