Water
Water is a compound because it is made from more than one kind of element (oxygen and hydrogen).
The most reactive metal<span> in the periodic table (Cesium) with the most reactive non-</span>metal<span> (</span>Fluorine<span>).</span>
Answer:H2 + F2 → 2HF
Hydrogen react with fluorine to produce hydrogen fluoride.
Answer:
900 J/mol
Explanation:
Data provided:
Enthalpy of the pure liquid at 75° C = 100 J/mol
Enthalpy of the pure vapor at 75° C = 1000 J/mol
Now,
the heat of vaporization is the the change in enthalpy from the liquid state to the vapor stage.
Thus, mathematically,
The heat of vaporization at 75° C
= Enthalpy of the pure vapor at 75° C - Enthalpy of the pure liquid at 75° C
on substituting the values, we get
The heat of vaporization at 75° C = 1000 J/mol - 100 J/mol
or
The heat of vaporization at 75° C = 900 J/mol
I believe the answer is a compound because compounds can be separated when put together while mixtures can not.
