Chemistry, 01.03.2021 20:40, anannanekejdjd

PLEASE HELP. ILL MARK BRAINLIEST PLEASE HELP. PLEASE
I NEED 1 AND 4

PLEASE HELP. ILL MARK BRAINLIEST PLEASE HELP. PLEASEI NEED 1 AND 4

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PLEASE HELP. ILL MARK BRAINLIEST PLEASE HELP. PLEASE
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