Flight Tube Equations Rearrangement Quiz

To identify elements on other planets with different compositions of isotopes.

Because there is double the probability of forming Br79-Br81 compared to the other combinations.

It represents the complete molecule and its mass is equal to the relative molecular mass (Mr) of the molecule.

<p>The molecule often breaks up and gives a series of peaks due to fragmentation.</p> Signup and view all the answers

<p>Fragmentation does not occur.</p> Signup and view all the answers

<p>Mass-to-charge ratio.</p> Signup and view all the answers

<p>A vaporised sample is injected at low pressure and high energy electrons are fired at the sample, knocking out an outer electron to form positive ions.</p> Signup and view all the answers

<p>Electron impact ionisation causes larger organic molecules to fragment, while electrospray ionisation does not result in fragmentation.</p> Signup and view all the answers

<p>The sample is dissolved in a volatile, polar solvent and injected through a fine needle to create a mist. The sample gains a proton from the solvent to form MH+ ions.</p> Signup and view all the answers

<p>Acceleration is used to give positive ions a constant kinetic energy, where the velocity of each particle depends on its mass.</p> Signup and view all the answers

<p>All particles have the same kinetic energy, so the velocity of each particle varies based on its mass.</p> Signup and view all the answers

<p>Electrospray ionisation is preferred for larger organic molecules because it operates under 'softer' conditions that prevent fragmentation.</p> Signup and view all the answers

<p>Ions with different m/z values can be distinguished by their different flight times in the flight tube of the mass spectrometer.</p> Signup and view all the answers

<p>The flight time (t) in a mass spectrometer is directly proportional to the length of the flight tube (d) and inversely proportional to the velocity of the particle (v).</p> Signup and view all the answers

<p>Current is generated in a mass spectrometer by electrons transferring from the detector to the positive ions.</p> Signup and view all the answers

<p>A 2+ charge on an ion indicates that two electrons have been removed from the particle, forming a 2+ ion.</p> Signup and view all the answers

<p>The ions are accelerated to have a specific kinetic energy, and this energy is used to propel the ions through the flight tube for analysis.</p> Signup and view all the answers

<p>One ion of 59Ni+ would take 1.33 x 10^-8 seconds to travel along the 0.8000 m long flight tube.</p> Signup and view all the answers