Answer:
unti-unting paglipat ng kapangyarihang pampolitikal galing sa amerikano papunta sa pilipino noong panahon ng amerikano
The reaction between ethanol C2H5OH and water H2O is a chemical reaction and is exothermic.
Option A is correct.
<h3>What is a chemical reaction?</h3>
A chemical reaction is a rearrangement between the ions and molecules of a substance. For a chemical reaction to take place, bonds are broken in the reactants and new bonds are formed in the products.
The chemical reaction between ethanol and water is;

- This reaction is exothermic because molecules move from a higher state of energy to lower states.
- The resulting volume is also lesser than the initial volumes of the reactants according to Henry's Law, showing that heat is given off to the walls of the container.
Therefore, we can conclude that A chemical reaction occurs, as evidenced by the volume of the resultant mixture being less than the total volume of the initial components.
Learn more about the chemical reaction here:
brainly.com/question/26018275
Answer:
As shown in the maps, the international boundaries in Europe changed considerably from 1980 to 2013.
Nationalism and super nationalism were to geographical processes that changed the number and function of those boundaries. It is about the breakup of the Soviet Union.
Explanation:
Some times people have a new idea that is thought to be out in the advance and then applied to the situation when it arises. Some times the situation occurs at it her place at another time, it appears to be intractable. From this process, the new idea gets squeezed out and it happens through the pressure of the circumstances.
The angle of sunlight is greater in the Southern Hemisphere during the winter. During the June solstice, the opposite is true. The Northern Hemisphere receives the maximum intensity of the sun's rays, while the angle of sunlight decreases in the Southern Hemisphere.