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:
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Answer:Option B says that "Merchants used connections to develop trade networks", but according to the passage there's no information that says anything about trade networks so B is not correct. Option C is not correct because that would have to involve with trading and there's no where that it says about it. Option D is not correct because Shiite theocracy means if you take a look of the context of the word theocracy, it means that "a system of government in which priests rule in the name of God or a god". It the passage it says about a prince named Melik Tuchar "who keeps an army of 200,000 men; Melik Khan keeps 100,000; Kharat Khan, 20,000, and many are the khans that keep 10,000 armed men. The sultan goes out with 300,000 men of his own troops". Option A would be the closest answer since it did mention about the prince having troops which it used for war and transportation. Again don't take my word, it could be wrong but I think it may be the correct answer.
Explanation:
Answer:
9371496
Explanation:
3 x 1562135 = 4686405 + 281 - 938 x 2 = 9371496
Explanation:
All are benefits of virtualization.
A. Backup and recovery can be centralized at one location, even with world-wide subsidiaries. The management of backup and recovery is therefore centralized and streamlined over 24 hours.
B. Lower operating cost comes from centralized or clustered locations, and for less costs for maintaining and replacing physical machines.
C. Security is vital to a commercial business. Virtualization allows security to conform to uniform standards for all locations without scattered locations supervised / operated by local personnel with different security standards.
D. Streamlining and automated management tasks includes all of the above. There is no more need to schedule availability of particular types of machines at particular locations. All resources are available at any time (assuming proper design of resources). Tasks can therefore be automated with continuous production, hence productivity. This is the most important feature and advantage of virtualization.
E. Ability to run legacy programs is definitely an advantage, but in almost all case, this is an occasional requirement, so is lower in the importance of the advantages.