Chemistry, 30.11.2021 19:40 tyrareed702
Cao su buna có 12000 mắt xích. Vậy khối lượng trung bình của nó là bao nhiêu?
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Cao su buna có 12000 mắt xích. Vậy khối lượng trung bình của nó là bao nhiêu?...
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