chemistry

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Which of the following are solutions? Choose all that apply. (Note: do not pick heterogeneous systems that contain a homogeneous phase.)
- Cold coffee or cold tea.
-Cigarette smoke.
- Tap water.
- Milk.
- Fog.
- The air typically found in a room.
- Pure water.

  • chemistry -

    solutions are transparent, homogenous, uniformly mixed.

    I see only three listed that are solutions.

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