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The following data were obtained for the extent of adsorption, s, of acetone on charcoal from an aqueous solution of molar concentration, c, at 18°C.
c/(mmol dm-3)
15.0
23.0
42.0
84.0
165
390
800
s/(mmol acetone/g charcoal)
0.60
0.75
1.05
1.50
2.15
3.50
5.10
Which isotherm fits this data best, Langmuir, Freundlich, or Temkin?
Calculate the maximum potential difference that can be maintained across a 55- mm layer of Teflon film
Two metal balls A and B of negligible radius, connected by a taut nonconducting thread of length 2.40 m, are floating at rest on Space Station Freedom between two metal bulkheads. Ball A carries charge q, and ball B carries charge 2q.
A diffraction grating with 300 lines per mm is used in an experiment to study the visible spectrum of a gas discharge tube. At what angle from the beam axis will the first order peak occur if the tube emits light with wavelength of 500.7 nm? At what ..
A thin, uniform, metal bar, 2m long and weighing 90N , is hanging vertically from the ceiling by a frictionless pivot. Find the angular speed of the bar just after the collision
Consider a solid sphere and a thin shell with the same radius and the same mass. Explain why the thin shell has a greater amount of intertia
You are moving a 100 kg refrigerator up a small staircase to a height of 1 m. You use a ramp that is 10 m long. What is the minimum amount of force along the ramp must you exert to push the refrigerator to the top?
A stretched string fixed at each end has a mass of 33.0 g and a length of 8.00 m. Determine the positions of the nodes for the third harmonic
1300-L rigid tank contains 16 kg of refrigerant-134a vapor at 320 kPa. The refrigerant is cooled until the temperature reached -14oC. Determine the internal energy change for this process
Assume you are a fish. You get up every morning and weigh yourself on your scales, and find you weight 0.42N. You, being a boxfish, are a box measuring 4.174 cm per side. You see a poor, hungry fisherman, and decide to be his dinner.
One kilowatt·hour (kW·h) is the amount of work or energy generated when one kilowatt of power is supplied for a timeof one hour. A kilowatt·hour is the unit of energy used bypower companies when figuring out your electric bill.
The second-order bright fringe (m = 2) is 4.46 cm from the center line. Determine the wavelength of the light. Answer in units of nm. Calculate the distance between adjacent bright fringes. Answer in units of cm.
If a simple pendulum with length 1.5m makes 72 oscillations in 180 s, what is the acceleration of gravity at its location
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