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The heat of vaporization of liquid water is 40.67 kJ/mol, and the molar heat capacity is 75.3 J/(K*mol) for the liquid and 33.6 J/(K*mol)for the vapor.
A 50kg mass is tied to a massless rope wrapped around a solid cylindrical drum, mounted on a frictionless horizontal axle. Find the drum's mass
A laser beam of wavelength 580nm is incident normally on a transmission grating having 410lines/mm
Given the following balanced reaction, if a mixture of 1.50 mol of Al and 3.00 mol of Cl2 are allowed to react, how many moles of AlCl3 are formed, assuming a 75% yield
An air-track glider attached to a spring oscillates with a period of 1.50s . At t=0s the glider is 5.10cm, What is the phase constant
In the following reactions all reactants and products are gases. Which of the reactions, if carried out in a closed container at constant T, would proceed with an increase in pressure
A bunch of grapes is placed in a spring scale at a supermarket. The grapes oscillate up and down with a period of 0.64s, What is the mass of the grapes
A solution of sulfuric acid is prepared by mixing 66.7 mL of 18.0 M sulfuric acid with 233.3 mL of 1.50 M sulfuric acid, and diluting with water to the total volume of 500 mL. What is the molarity o
Two people with a combined mass of 123kg hop into an old car with worn-out shock absorbers. Find the total load supported by the springs
When the following chemical equation is correctly balanced, what is the sum of the smallest set of integer coefficients
The lens of an endoscope is carefully matched such that the light ray from the edge of the lens enters the fiber at an angle. What focal length should the lens have
An object's moment of inertia is 1.8kgm2 . Its angular velocity is increasing at the rate of 3.3rad/s2, What is the torque on the object
When comparing the successive ionization energies of an element, an unusually big increase in ionization energy is seen when
Light of 650 nm is incident on two slits. A maximum is seen at an angle of 5.74° and a minimum of 6.46°. What is the order m of the maximum
Given the equation y=-5640.5+14.086. Using he slope calculate the activation energy of the reaction.
A solid spherical ball of mass 2.3 kg and radius 0.11 m rolls along a smooth, What is the ball's rotational kinetic energy
How many grams of lead may be formed by the passage of 65.5 amps for 1.07 hours through an electrolytic cell that contains an aqueous Pb(IV) salt.
A cube of iron, of side length 14cm, is heated from 10?C to 90?C; Calculate the total work done ON the cube and the change in internal energy of the cube
what is the common IUPAC name for a benzene ring with a single ammonia group (NH3) attached
Two converging lenses are placed 88.0 cm apart. An object is placed 1.100 m to the left of the first lens, What is the focal length of the second lens
what does the Fluid Mosaic Model say about the structure and composition of a cell's membrane. Why would water molecules or a metabolic compound like Acetyl-CoA, need a transport protein to move rap
How many grams of magnesium may be formed by the passage of 76.0 amps for 8.03 hours through an electrolytic cell that contains a molten magnesium salt.
Electrolysis of molten NaCl in a Downs cell is the major isolation step in the production of sodium metal. If 65.0 g of Na are obtained, how many amps are required to produce this in 7.50 hours
How do the isoelectric points in Part B compare with isoionic points from Part A? Explain similarities or differences that you observe in these values.
An astronaut travels at a speed of 0.93c from the Earth to a distant star that is 4.5e+17 m away. how old is she when she arrives at the star