Asantetaedog8934
09.12.2020 •
Chemistry
Please help me with this, ill make brainiest
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Ответ:
Handpicking or sand strainers
Explanation:
it is easy to separate sea sand from the shell bits, rocks, and sea animals by handpicking. Filtering, evaporating, and settling can't be used because those methods are used to separate liquid items from solid items, so, magnetism can be a little good method.
Ответ:
D. None of these will increase the half life.
Explanation:
Half life is the amount of time taken to decay to half of its original value. The half life is related to rate constant by the following relation for a first order reaction:
As half life is independent of concentration , temperature and pressure, none of these factors would affect the half life.
Thus in the reaction,
following first order kinetics, none of the factors will increase the half life.