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КРОК / KROK
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The third analitycal group of cations (acid-base classification) includes $Ca^{2+$, $Sr^{2+$, $Ba^{2+$. What acid can function as a precipitator agent (group reagent) for these cations?
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Який патогенез розвитку цукрового діабету 1-го типу?
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What value determines the degree to which foreign ions can influence the potential of an ion-selective electrode?
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What reagents produce a reaction that follows the free radical (SR) mechanism?
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Pastes are used in medicine to treat skin diseases. What type of disperse systems are they?
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What physico-chemical method is used to determine the pH of solutions for injections?
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Первинні та вторинні нітроалкани є таутомерними сполуками. Яка таутомерія характерна для них?
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Which compound of those listed below is an alicyclic hydrocarbon?
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In what pair of substances the both of them form a precipitate of metallic silver when Tollens reagent is added (during heating)?
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To obtain exotoxins of some microorganisms, these microorganisms are inoculated into liquid nutrient medium, where microbial cultivation occurs and toxins are produced. At a certain stage it is necessary to remove the microbial cells from the medium, that is, to separate the toxins from microbes. What method should be applied in this case?
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