Answer:
B
Explanation:
Cuz they are supported once discovered and then widely spread then accepted
The best answer among the choices is option D. New substances are being formed will best explain that this process is a chemical change. Although, it cannot be seen directly we knew that an acid and base will undergo neutralization reaction forming a salt and water. The heat given off by the reaction can be a parameter however it does not only happens for reactions. It can also happen when dissolving substances.
Molality=mol/kg
342/171
=2m
Hope this helped :)
