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Vladimir79 [104]
3 years ago
15

Helppp plzzz will give brainlist

Chemistry
1 answer:
Maslowich3 years ago
5 0
4. A
because PbCl2 is an ionic compound and it's solid, so it's a substance.
It cannot be mixture, because it's a pure molecule.
5. D
despite that both substances are gases, colorless they are different molecules, so they should have different either chemical and physical properties
6. C
this substance made from W atoms and others are made from molecules
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