Explore BrainMass

# Mass spectrometer - atoms moving in magnetic field

Not what you're looking for? Search our solutions OR ask your own Custom question.

This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

Imagine that we give N2(+), O2(+) and (NO)+ ions the same velocity of 30.0 km/s and then send them into a mass spectrometer where the magnetic field strength is B=8.5MN/C. How far would the spot on the photographic plate be from the entry point for each ion, assuming that each ion completes one-half of an orbit. The atomic mass of a nitrogren atom is 14.0031 amu and oxygen is 15.9949 amu, where 1 amu = 1.6605 x 10^-27 kg

https://brainmass.com/chemistry/stoichiometry/mass-spectrometer-atoms-moving-in-magnetic-field-10568

#### Solution Preview

mass of O2 ions mo = 2*15.9949 * 1.66 * 10^-27 kg
mass of N2 ions mn = 14.0031 * 1.66 * 10^-27 kg
mass of NO ions M = 29.998 * 1.66 * 10^-27 Kg

The charged particle undergoes circular motion, with,

mv^2 /R = q v B

...

#### Solution Summary

The solution gives all steps along with proper explanations so that you can solve similar problems yourself.

\$2.49