2.
Which of the following is good evidence that an unknown sample is a pure
substance.
...
Chemistry, 20.11.2020 01:00, lorelaistudent
2.
Which of the following is good evidence that an unknown sample is a pure
substance.
A
After leaving a liquid to settle, it separates.
B
After leaving a liquid to settle, it does not separate.
С
After evaporating a liquid, there is nothing left behind.
D
After evaporating a liquid, a white powder is left behind.
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Answers: 2
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