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Cysteine (symbol Cys or C;[5] /ˈsɪstɪiːn/)[6] is a...

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Sulfur (also spelled sulphur in British English) i...

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pH indicator Phenolphthalein (pH indicator) below ...

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A pH indicator is a halochromic chemical compound ...

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Plant nutrition is the study of the chemical eleme...

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The Biuret reagent is made of sodium hydroxide (Na...

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The Biuret reagent is made of sodium hydroxide (Na...

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Hexane (/ˈhɛkseɪn/) or n-hexane is an organic comp...

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