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High ionisation energy:
The high ionisation energy of helium (24.6 eV) makes it a potential gas to be used in plasma source.
The nitrogen gas is generally not used as a plasma gas in plasma based atomic emission spectrometry because the excited nitrogen emits a complex band spectrum that can cause undesirable spectral interference.
Polychromator is a type of simultaneous spectrometer. It has a fixed diffraction grating monochromator and multiple 'exit slits' with associated photomultipliers. Every of the photomultiplier is optimized to detect a specified wavelength corresponding to an element of interest. The emission radiation from the source is dispersed by the grating and sent through different exit slits to be detected by appropriate photomultiplier tube.
Thirty pounds of coal (analysis 80% C and 20% H ignoring the ash) are burned with 600 lbs of air (with a variable humidity), yielding a gas have an Orsat analysis in which the rati
prove berzelius hypothesis
free energy and spontaeity
The ratio of area covered by second orbital to the first orbital is: (1) 1 : 2 (2) 1 : 16 (3) 8 : 1 (4) 16 : 1 Ans: 16 : 1
Define Degrees of freedom - phase rule and phase diagrams? Consider a system in an equilibrium state. In this state, the system has one or more phases; each phase contains one
why is carbon valency four
Dienes - Hydrocarbon These are hydrocarbon along with two carbon-carbon double bonds. Dienes are of three forms (a) Conjugated dienes: Double bonds are seperated through one
Explain Carbocation The mechanism is a sequence of two Brønsted acid-base reactions. In the first (step a), the double bond is protonated to give a tertiary carbocation; in the
Describe the following electrochemical methods in terms of their working principles instrumentation and applications i. Potentiometry ii. polarography iii. Conductometry
Which one is the electronic configuration of Fe +2 : (1) 1s 2, 2s 2 , 2p 6 , 3s 2 , 3p 6 , 3d 6 (2) 1s 2 , 2s 2 , 2p 6 , 3s 2 , 3p 4 , 4s 2 (3) 1s 2 , 2s 2 ,
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