Chlorine also makes a great stain remover, but not because of the chlorine itself. Natural stains (as well as dyes) produced by everything from mildew to grass come from chemical compounds called chromophores. Chromophores can absorb light at specific wavelengths and therefore cause colors. When ...
阅读下列短文,写出有关反应的化学方程式。Chlorine is manufactured by the electrolysis of sodium chloride. It is a greenish-yellow,poisonous gas with a pungent smell. Chlorine is somewhat soluble in water, forming chlorine water.Chlorine water contains dissolved chlorine and hydrochloric and hypochloric ...
This study investigated the efficacy of sodium chloride (SC) and trichlorfon (T) against Dawestrema cycloancistrium and its physiological effects on Arapaima gigas. The efficacy of chlorine (C) as a prophylactic disinfectant was also evaluated. In vitro test with 15 treatments were: SC 4, 8,...
解析 DThe only correct answer is DA is not correct because sodium is an elementnot a mixtureB is not correct because chlorine is an elementnot a mixtureC is not correct because sodium chloride is apure compound not a mixture 反馈 收藏 ...
or PVC—will have to be eliminated and replaced with more sustainable alternatives, saysImari Walker-Franklin, a research chemist whopublished a book with MIT Presson plastics earlier this year. PVC, which is often used to make pipes and other materials, breaks down into toxic chlorine-c...
The solution to this gassing problem is to eliminate the chloride ion contaminates. The most important step in reducing chloride contamination is the avoidance of potassium perchlorate (KClO 4 ) or any other chlorine-containing substances that can decompose to produce chloride ions in any thermal ...
16 Iron(II) chloride solution reacts with chlorine gas.The equation is shown.$$ 2 F e C l _ { 2 } ( a q ) + C l _ { 2 } ( g ) \rightarrow 2 F e C l _ { 3 } ( a q ) $$Which statements about this reaction are correct?1 Fe^{2+} ions are reduced to o$$ F...
structure [0.5] There Is weak Intormolocular farpo of etraatlon between moleculog (0 5] Thus o hoat onoegy is requlred to overcome these weak forces of attrnetlon [05] Thus, Cla has a low meltlng andboling poim.On the other hand, NaGI is an lonic compound witha giant Tanlo ...
PEVA (polyethylene vinyl acetate) has emerged as an alternative material that addresses some of PVC’s known challenges. Its molecular structure, free from chlorine and phthalates, results in a material with different chemical properties and environmental interactions. ...
intake of sodium, you need to realize the quantity of salt you eat is related to the amount of sodium but is not the same. This is because salt contains both sodium and chlorine, so when salt dissociates into its ions, the mass is divided (not equally) between sodium and chlorine ions...