Answer:
electron capture detectors (ECD)
Explanation:
Electron capture detectors (ECD) would be most sensitive for GC analysis of PCBs.
Answer: The detectors that would be most sensitive for GC analysis of PCBs are
- Electron Capture Detectors (ECD)
Explanation:
Polychlorinated biphenyls(PCBs) are oily chemicals that are manufactured(man-made) and used as lubricants in electrical equipments such as transformers. They are grouped as major environmental pollutants because they are characterised as being very stable, as they are resistant to extreme temperature and pressure. Therefore with time the build up in the environment and can cause harmful health effects.
In the environment, it can be found distributed virtually everywhere incl, air water or soil. The PCBs can be analysed in the environment through the use of gas chromatography( GC) with electron capture detector (ECD) as the most sensitive detector. The method was found to be more sensitive as the number of chlorine atoms attached to the biphenyl increases.
Answer:
Coconut oil, Olive oil and Sunflower oil
Explanation:
Fatty acids are carboxylic acids with a long unbranched chain of carbon and hydrogen atoms.
There are three main classes of fatty acids which are explained as under:
1. Saturated Fatty acids: These fatty acids have long carbon chain with two hydrogen atoms bonded to each carbon atom. This saturation of fatty acids make the fatty acids more stable towards high temperature. These fatty acids becomes solid at room temperature. Coconut oil and butter are the examples of saturated fatty acids.
2. Monounsaturated Fatty Acids: In a long carbon chain, if there is a carbon atom which is double bonded with another carbon atom and rest is saturated with hydrogen atoms, because of this single double-bond, the fatty acid is termed as monounsaturated fatty acids. These fatty acids are liquid at room temperature but solidify in refrigerator. Olive oil is an example of such fatty acids.
3. Polyunsaturated Fatty Acids: In a long carbon chain, if there are two or more than two carbon atoms which are double bonded with each other and rest is saturated with hydrogen atoms, because of multiple double bonds, such fatty acids are termed as polyunsaturated fatty acids. Because of higher unsaturation, these fatty acids are liquid in both normal room temperature and in refrigerator. Such unsaturation also make them unfit for cooking purposes. Sunflower oil, Soyabean oil and Flaxseed oil are examples of polyunsaturated fatty acids.
conduction
convection
radiation
Answer:
balanced............
In one experiment, you do not have the metal oxalate productas dry as possible. This might affect the pyrolysis procedure by maybe thewater will react with the compound at very high temp; the initial weight of thesample is already incorrect that might cause error in the further calculations.
Answer:
The process would not be attained completely.
Explanation:
Hello,
In chemical reactions, pyrolysis is understood as a thermochemical decomposition or breaking of organic chains at very high temperatures and under the absence of halogens and oxygen. In this case, as a metal oxalate is the organic chain, when it is a product and is not dry as possible, the reaction would not be attained to completion as the water will limit the conversion and the reaction extent.
Best regards.