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A sample containing beryllium (atomic mass 9 u), aluminum (27 u), and an unknown element is placed in a mass spectrometer. The ions all have the same charge and are accelerated through the same potential difference before entering the magnetic field. The beryllium and aluminum lines are separated by 1.800 cm on the photographic plate, and the unknown element makes a line between them that is 1.207 cm from the beryllium line.
(a) What is the mass of the unknown element?
(b) Identify the element, using its chemical symbol. (Note that there may be more than one correct answer.)
A quantity of ideal gas at 10.0°C and 100 kPa occupies a volume of 1.20 m3. how much volume does the gas occupy
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The center of a 1.40km diameter spherical pocket of oil is 1.5 km beneath the Earth's surface.Estimate by what percentage directly above the pocket of oil would differ from expected value of g for a uniform Earth? Assume the density of oil is 8.0 ..
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X-rays having an energy of 300 keV undergo Compton scattering from a target. The scattered rays are detected at 37.0° relative to the incident rays. find the energy of the recoiling electron
If the magnetic field strength is 0.845 T, what is magnitude and direction of the magnetic force on the wire between the poles
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