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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.
Question: (a) Explain why metals are mostly ductile and ceramics brittle at room temperature. (b) Describe what you understand by the following terms. Use appropriate il
Postulates of molecular orbital theory?
A 4-m long curved gate is located in the side of a reservoir containing water as shown in Figure. Determine the magnitude of the horizontal and vertical components of the force of
Talcum powder: Talcum powder is utilized to decrease impatience of the skin. Talcum powders such as face powders comprise talc (Mg 3 (OH) 2 Si 4 O 10 ) Chalk, zinc stearate an
50ml of 0.1M NH 4 OH ,25ml NH 4 Cl weere used to make a buffer . what is the PH is if Pk b is 4.8? Solution) The given buffer is a base buffer [NH4OH] =[(50*0.1)/75] [NH4Cl] =[(
Q. Moisture removal in foods by different drying techniques? To carry out the moisture removal in foods by different drying techniques. • make yourselves familiarized with
copper reacts with oxygen to form two oxide X and Y .On analysis 1.535g of X yielded 1.365g of copper and 1.450g of Y yielded 1.160g of copper. [I] determine the chemical formula
Q. Define functional food? Functional food is a food that has a component incorporated into it to give a specific medical or physiological benefit, other than a purely nutritio
Uses of methanol - Uses of monohydric alcohol (1) Methanol is extremely important industrial starting material for making formaldehyde, acetic acid and other chemicals. (2)
Calculate the molarmass of a nonelectrolyte that lowers the freezing point of 25.00g of water to -3.9 degrees C when 4.27 g of the substance is dissolved in the water.
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