WHICH IMAGE WOULD BE CONSIDERD PURE SUBSTANCES

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Iam not sure butch i thinnk it is ab

Answerδh > 0explanationc₆h₆  (s)  → c₆h₆ (l)if you are changing it from a solid to a liquid, you are pretty much melting the solid. this requires heat energy. therefore, the reaction is endothermic (takes in energy); the system enthalpy increases as the reaction proceeds: δh > 0.

The answer is falsegravitational force is independent of medium and depends only on the masses of the two objects and the distance between them.