Answer:
Reduce the intensity of radiations
Explanation:
Atomic Emission Spectroscopy is the study of electromagnetic radiations that are emitted by matter when it is excited. It is used to analyze intensity of light emitted. To end the radiations of AFS and AES their intensity is reduced and they are gradually rejected. It is not possible to completely eliminate the radiations immediately.
The moles of OH- ions from the Ba(OH)2 must equal the moles of H+ ions from the HNO3 in order for them to neutralize. You must multiply volume (in liters) by the molar to get number of moles. There is 0.90 molar of OH- because there is twice as many OH- as there is Ba(OH)2. The molarity of H+ is unknown.
Let X be the unknown molarity
(0.0182 L)(0.90 M) = (0.0385 L)(X M)
X = 0.43 M (2 significant figures)
So the molarity of H+ ions, and therefore HNO3 is 0.43 M
Answer:
Nitrogen dioxide does not rekindle a glowing splinter becuase it is a not a very good oxidant. However, it will support the combustion of burning substances that are able to decompose it into nitrogen and oxygen gas.
NO₂ (g) ----> N₂ (g) + O₂
The oxygen then produced will go ahead to rekindle the glowing splinter.
Explanation:
Nitrogen dioxide isa reddish brown gas that is given when trioxiponitrate (v) salts, for example Lead (ii) trioxonitrate (v) of heavy metals are heated.
It is an mild oxidizing agent due to the presence of oxygen in the molecule of the compound.
It does not support combustion and does not burning air because of the inertnesss of the nitrogen atom. However, it will support the combustion of burning substances that are able to decompose it into nitrogen and oxygen gas.
For example, phosphorus is a very combustible material due to its low ignition temperature of 35°C. It catches fire spontaneously in air. Nitrogen dioxide is decomposed by burning phosphorus to nitrogen and oxygen. The oxygen produced supports further combustion of the burning phosphorus.
NO₂ (g) ----> N₂ (g) + O₂
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