How can we define color? 1: Color is the wavelength absorbed by an object.
2: Color is the wavelength refracted by an object.
3: Color is embedded in the atoms of an object 4: Color is the wavelength reflected off an object.​

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.

Not a  mixture of two common elements that can be separated by physical means.