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Chemistry, 22.06.2019 10:00
Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.
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Chemistry, 22.06.2019 12:00
Why are people not able to skip a dive to the deepest part of the ocean
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có 4 lọ mất nhãn gồm các dung dịch sau: NaOH ,Na2SO4 ,HCl ,H2SO4 bằng phương pháp hóa học hãy nhận b...
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