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Biology, 08.07.2019 16:00 rutza

Asample of iodine is easiest to ship as a powder because it is , making it easy to break into small pieces. helium is less than the elements that make up the air we breathe, so a balloon filled with helium will float in air. plastic is a compound of nonmetallic elements, so its properties make it a popular coating for electric wires to prevent the current from escaping.

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