What is kentchin?
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What is hydrogenation of oils ?
Why is the sea water saline ?
i pass my B.Sc. in 1999(chemistry. i dont understand what study after bsc. i am an average student.After my Bsc i joint my brother factory and i work there as a production, QC and electrical testing for Oil. i try to another job but my exprince not match my education co u tale me what i do.
Why is Davy Lamp called a Safety Lamp ?
State beer’s law.
Why does a white paper appear white, when light is not to fall on it ?
What is Electrovalence?
what is ppm?how to prepare 75 ppm?
Why is sometimes a succession of echoes heard ?
what is the valence of nitrogen?
why helium does not react with other elements?
Why do clothes dry quicker in wind than in still air ?