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02.09.2019 •
Social Studies
Predict whether the following pairs of liquids would be miscible or immiscible: a. water and methyl alcohol b. hexane and benzene c. methylene chloride and benzene d. water and toluene e. cyclohexanone and water
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Ответ:
a) water and methyl alcohol
Both are polar liquids, therefore, they are miscible.
b) Hexane and benzene
Both the liquids are nonpolar hence they are miscible.
c) Methylene chloride and benzene
Methylene chloride is polar in nature and benzene is nonpolar hence these liquid is immiscible in nature.
d) Water and toluene
water is polar in nature and toluene is nonpolar hence immiscible.
e) Cyclohexanone and water
Both are polar liquids, therefore, they are miscible.
Ответ:
The correct answer to this open question is the following.
Although there are no options attached we can say the following.
Unfortunately, you did not attach the article, so we are only using our knowledge of social studies to answer this question.
Why might the Japanese military have been unable to break the Navajo Code Talkers Code?
The Japanese military was not familiar with the language spoken by the Navajo Native American Indian tribe and there was no way they could learn the language as adults because it was so difficult and had no time to learn it in the middle of the war.
The code talkers developed the original version of the Navajo code in that they were looking for a special code to use in the war that was extremely difficult to be intercepted and translated by the enemy. That is why the code talkers developed a special code with elements of the Navajo language. During World War 1, Choctaw transmitted codified messages to the US Army headquarters in countries like France. Years later, by the 1940s during World War II, the US Army recruited Native American Indians such as Cherokees, Comanches, and Hopis. But in 1941, it was the Marine Corps the ones that hired Navajo Code Talkers to transmit secret communication during the war.