Какие правила техники безопасности следует соблюдать при работе с анилиновыми красителями? Где используют эти красители (приведите примеры)?
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Ответ:
In an ideal world, an analytical precipitate for gravimetric analysis should consist of perfect crystals large enough to be easily washed and filtered.
The precipitate should also be "insoluble"(i.e. be of such slight solubility that loses from dissolution would be minimal).