What is the approximate volume injected into a GC? 10-50 μL 500-1000 μL 1-10 μL 100-500 μL 50-100 μL What technique is used to adjust for injection volume inaccuracy? Standard Addition Nothing, the syringe is accurate External Standard Standardization Internal Standard

1-10 μL

Explanation:

Gas Chromatography (GC) is a method of separating the constituents of a complex mixture by taking advantage of their different rates of movement in a solvent over an adsorbent medium. Gas Chromatography (GC) is a means of separation and analysis that utilises fractional separation. It is based on the principle that if a fluid containing a number of substances is allowed to pass through an adsorbent medium , the different substances in the fluid may travel at different rates and be separated.

The approximate volume injected through an inlet by using a split injection into a Gas Chromatography (GC) contains a sample with an approximate value of analyte which varies from  1-10 μL.

In order to adjust for injection volume inaccuracy, the technique used is known as  Internal Standard.

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

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