Bacteria can be identified by using a time-of-flightmass spectrometer to measure their chemicalcomposition. First, a very short laser pulsevaporizes and ionizes a bacterial sample. Thepositive ions are accelerated, in vacuum, through a-15 kV potential difference, and then they travel atconstant speed through a 1.5-m-long drift tube to adetector that records their arrival times. An ion'stime of flight depends on its mass, so a record ofthe arrival times can be used to determine themasses of the biomolecules that were releasedfrom the bacteria. Each type of bacteria has aunique set of proteins with different masses, so themass spectrum is a fingerprint for identifyingbacteria.Part AWhat is the mass in kDa of an ionized protein that is detected 51 us after the laser pulse? You canassume that the protein is singly ionized (g = +e) which is mostly true in practice. You can alsoneglect the time needed to accelerate through the potential difference because it is very smallcompared to the drift time.Express your answer in kilodaltons.m =Submit196] ΑΣΦProvide FeedbackRequest Answer?kDaNext >

To determine the mass in kilodaltons (kDa) of an ionized protein detected 51 μs after the laser…

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