justin5647
04.12.2020 •
Chemistry
a student is trying to identify an unkown substance by finding its density. he minds the mass of a wighing boat to be2.69g
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Ответ:
21
Explanation:
Ответ:
answer:
indirect evidence must be used to study the structure of atoms because the direct evidence affects the position and energy of the particles of the atomic structure.
explanation:
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