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Useful Constants: 1 Torr = 133.32 Pa; R = 8.3145 J/mol·K You have a thin metal sphere of unknown volume that contains helium gas at low pressure. You put the entire metal sphere into a bath of liquid nitrogen, and a pressure gauge on the sphere indicates a pressure of 301 torr.
a) You now place the metal sphere in a mixture of dry ice and methanol. What is the new pressure? torr
b) You now place the metal sphere in ice water. What is the new pressure? torr
c) You now place the metal sphere in a water bath at room temperature (measured to be 25.6 °C). What is the new pressure? torr
d) You now place the metal sphere in boiling water. What is the new pressure? torr
e) Given that the volume of the metal sphere, pressure gauge, etc., was 341 mL, how many moles of helium gas would you have? mol
a monochromatic beam of x-rays with a wavelength of 0.280 nm is scattered by a metal foil. what is the observed scattering angle
A bucket of water is whirled in a vertical circle of radius 90cm,What is the least speed that will keep the water from falling out.
To fit a contact lens to a patient's eye, a keratometer can be used to measure the curvature of the cornea-the front surface of the eye. Determine the radius of curvature of the cornea
A 0.360 kg mass is attached to a spring with a force constant of 25.9 N/m, Calculate the speed of the mass
A chocolate bar (40grams) has 210 Calories. Approximately how long would the 100 watt light bulb shine if we convert all the chocolate's energy into electricity (100% efficiently)? (Remember 1Cal = 1000 cal = 4200 joules)
A 1000kg car accelerates from rest to 60mph (134m/s) in 10s. During this time, its engine was operating at 3600rpm. Use the work-energy theorem to find the net work done by the car
A basketball player makes a jump shot. The 0.600 kg ball is released at a height of 2.00 m above the floor with a speed of 7.20 m/s. The ball goes through the net 3.10 m above the floor at a speed of 4.20 m/s Find the work done on the ball by air ..
Estimate the boiling point of a 0.6 molal solution of NaCl in water, What is the osmotic pressure of a 100 mL of toluene solution that contains a total of .005 moles of a polymer dissolved in it at 25°C
In the Challenger Deep of the Marianas Trench, the depth of seawater is 10.9 km and the pressure is 1.16 x 10^8 Pa. What is the density of seawater at this depth
Observations of a certain galaxy show that stars at a distance of 16 pc from the center of the galaxy orbit a central supermassive black hole at a speed of 200 km/s
In a physics demonstration, a stationary mass m1 = 0.20kg slides down a frictionless ramp and then collides with a second mass m2 = 0.40 kg. Find the height needed if you reverse the masses
Three thin uniformly charged shells A, B and C, with radii R, 2R , 3R respectively are placed one inside the other, What is the electric potential at radius 2R
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