Key Points
For many solids dissolved in liquid water, the solubility increases with temperature.
The increase in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
The correct answer would be the second option. When the gibbs free energy of a system is negative and the electromotive force (EMF) of the system is positive then the reaction is to occur readily without any input of energy. With this, the reaction is said to be spontaneous. The higher the value of the EMF of a cell then it means the driving force for the reaction to occur is also high.
c) are often metals
liquids are fairly good thermal conductors while gases and things like wood and plastic foam are poor conductors of heat.
No they do not, darker colors tend to fade at a different rate than the lighter ones
The answer is 3. As 5 * 3 = 15.
Is there any other equations I may be able to help you with? :)