Valence electrons are the electrons in the outermost shell, or energy level, of an atom. For example, oxygen has six valence electrons, two in the 2s subshell and four in the 2p subshell. We can write the configuration of oxygen's valence electrons as 2s²2p⁴
During the mid 19th century, the country's natural resources were heavily exploited without any regard for the resulting waste that would be produce in the process. Forest land were being converted to industrial and residential areas. Mines were popping up to where rich minerals were present.
Answer: This is true.
Explanation:
It is true because if becomes frozen, then it is physically harder to melt...
Answer:
The solvent will be not be suitable because ΔS > 0
Explanation:
The entropy measures the disorder of the system, and by the second law of the thermodynamics, it's always increasing. So, a glass that broked (increased in disorder) does not intend to be fixed naturally.
So, when ΔS > 0, it means that the disorder in the system increased, the reaction occurred spontaneously. ΔSºvap is positive for that solvent, so it means that it will boil.