Chemistry, 07.03.2020 02:45 Itsyourgirllulu
There are two main methods to get proteins into a gas phase for mass spectroscopy: electrospray ionization (ESI) and matrix-assisted laser desorption/ionization (MALDI). Place the appropriate description of each ionization method in the appropriate space.- Can be used for proteins or peptides that have been treated with proteases like trypsin- Ionization evaporates solvent, leaving peptide in gas phase to travel through the separating mass spectrometer.- Uses mass-to-charge (m/z) ratio to determine molecular mass- Degrades and charges the peptide with high voltage- Proteins or peptides are mixed in a solid matrix rather than a solution.- Is based on the mass and acceleration though a chamber ending in a detector- Laser will be absorbed by the peptide containing material releasing the peptide into the gas phase.- Sample becomes ionized due to high voltage.- Peptides become fragmented and charged due to laser exposure.
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Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy
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If it is an isoelectronic series select true, if not select false. o2-, s2-, se2-, te2- na+, k+, rb+, cs+ n3-, p3-, as3-, sb3- ag, cd+, sn3+, sb4+ f-, cl-, br-, i- f-, ne, na+, mg2+ s2-, s, s6+
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There are two main methods to get proteins into a gas phase for mass spectroscopy: electrospray ioni...
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