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What is the sum(c5c18) in cell c19 in excel?
=SUM(C5:C18) will add the values in all the cells from C5 to C18 and put the total in C19 when the formula is placed there.
What is C8 and C18?
HPLC columns. (HPLC - High Performance Liquid Chromatography.)
What is the common name of a fatty acid that has c18 2n3 structure?
Alpha Linoleic acid
What nationality is the surname Cattee?
French, they were Huguenots, many of whom escaped from persecution in the c18
Can you use a C18 column for HPLC with fluorescence detector and methanol as the mobile phase?
Yes, you can use a C18 column and methanol as a mobile phase with fluorescence detector. Fluorescence detector is generally used as it can detect the presence of compounds at a very low concentration.
C18 hydrocarbon polar nonpolar?
it is nonpolar since C-H bonds are considered a nonpolar bond
What is C18 phase in hplc column?
Both C8 and C18 columns are considered as examples of reversed phase liquid chromatography (RP). The stationary phase here is seen as a thin film of non-polar liquid phase that has been designed to be chemically anchored to an inert material (Silica gel particles). The non-polar layer is chemically linked to the silica particles surface by reaction with the polar silanol groups on the stationary phase surface and so rendering them (less polar or non-polar), The difference between the two columns will be in the length of the carbon-chain attached to the silica surface. Acoordingly C8 hplc columns have packing material composed of silica particles attached to C8 carbon units while C18 will, of course, have packing materials coated with C18 hydrophobic units. Categorically both are reversed phase but C18 columns will definitely be more "hydrophobic rather than the C8 columns.
What is the composition of candle?
For Paraffin candles: mostly paraffin - which is a mixture of hydrocarbons ranging from about 20 to 40 carbons per molecule. For tallow candles: mostly fatty acids including Oleic acid (C18-1, ω-9), Palmitic acid (C16:0), and Stearic acid (C18:0).
What type of vehicle is the C18 CAT?
A C18 CAT is an engine for tractors, combines and harvesters. It is also suitable for Aircraft Ground Support and Airport Rescue Firefighting Vehicles. The engine can also be used for compressors, mobile earth movers and trenchers among several other kinds of engine powered vehicles and devices.
Can C18 column for HPLC be used with UV and visible spectra detector and Acetonitril as mobile phase?
Of course.... there isn´t problem....
What is grade c16 in lumber?
It is the second weakest grade in this scale: C14, C16, C18, С22, С24, С27, С30, С35 and С40.
When you use c8 and when c18 column?
Both C8 and C18 columns are considered as examples of reversed phase liquid chromatography (RP). The stationary phase here is seen as a thin film of non-polar liquid phase that has been designed to be chemically anchored to an inert material (Silica gel particles). The non-polar layer is chemically linked to the silica particles surface by reaction with the polar silanol groups on the stationary phase surface and so rendering them (less polar or non-polar), The difference between the two columns will be in the length of the carbon-chain attached to the silica surface. Acoordingly C8 hplc columns have packing material composed of silica particles attached to C8 carbon units while C18 will, of course, have packing materials coated with C18 hydrophobic units. Categorically both are reversed phase but C18 columns will definitely be more "hydrophobic" rather than the C8 columns. See also the links below.
