Asked by Diana

which of the following are mixtures?

1. air (mostly n2 and o2)
2. salt (NaCl)
3. Salt Water
4. Water (h20)

is the answer 4 and 2 ?
Answered by DrBob222
No. H2O is a compound as is NaCl (tble salt). Air is a mixture. Salt water is hard to say since I don't know enough about the source. If you dissolve NaCl in H2O you get a solution; if you do this in ocean water it may be a mixture because there are solid particles in there also.
Answered by cupcake
air is a mixture and salt water is a mixture
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