Electrospray Ionization Is One of Many Techniques Interfacing Chromatography with Mass

question 17

Multiple Choice

Electrospray ionization is one of many techniques interfacing chromatography with mass spectroscopy.Which is NOT true for electrospray ionization?

• A)The steel nebulizer is held at 0 V while the spray chamber is held at −3500 V.
• B)The strong electric field between the nebulizer and spray chamber creates a fine aerosol.
• C)The glass capillary leading to the mass spectrometer is held at a potential of −4500 V to attract the gas phase cations.
• D)Typically the ions that vaporize from aerosol droplets were already charged while on the chromatography column.
• E)There is minimal fragmentation,but fragmentation can be increased by collisionally activated dissociation.

Identify the different types of interactions (e.g., facilitation, inhibition, competition) that can occur during ecological succession.

Understand the relationship between species richness, productivity, and ecosystem stability.

Recognize processes and outcomes of both primary and secondary successions in ecosystems.

Identify the roles of specific organisms and species interactions in shaping community structure and dynamics.

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A country in Western Asia, located on the northern edge of Eastern Arabia at the tip of the Persian Gulf, known for its petroleum-based economy, liberal trade policies, and significant cultural heritage.

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A movement within Islam that seeks to return to the fundamentals of the religion and live strictly according to the Quran and Hadith.