Answer:
Conversion of alcohols to alkenes: R-CH2-CHOH-R → R-CH=CH-R + H2O
Conversion of carboxylic acids to acid anhydrides 2 RCO2H → (RCO)2O + H2O
Explanation:
Dehydration
In chemistry, a dehydration reaction is one that involves the loss of water. In organic synthesis, where an acid is often used as a catalyst, there are numerous examples of dehydration reactions: Conversion of alcohols to ethers: 2 R-OH → R-O-R + H2O Conversion of alcohols to alkenes: R-CH2-CHOH-R → R-CH=CH-R + H2O Conversion of carboxylic acids to acid anhydrides 2 RCO2H → (RCO)2O + H2O Conversion of amides to nitriles: RCONH2 → R-CN + H2O
Sources:
Klein Organic Chemistry. 2th edition
Mcmurry's Organic Chemistry. 9th edition.
$150 Was the original price of the rice cooker
Answer:
está en el interior se llama un endoskeleton. Algunas criaturas, llamadas artrópodos, tienen esqueletos fuera de sus cuerpos. Todas estas criaturas tienen esqueletos hechos de placas duras o conchas.
Nystagmus or repeated sweeping movement of the eye during neurologic evaluation indicates a vestibular problem within the brainstem.
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What is Nystagmus? </h3>
- A condition of vision where the eyes make repetitive, uncontrolled movements is termed as Nystagmus.
- Reduced vision and depth perception are the results and can affect balance and coordination.
- Both eyes are unable to steadily view objects as the involuntary eye movements occur from up and down, side to side or in a circular pattern.
- A patient with nystagmus might nod and hold their heads in unusual positions to compensate for the condition.
- Fatigue and stress make this condition even worse. The cause of this is unknown.
To learn more about Nystagmus: brainly.com/question/1306002 #SPJ4
Answer:
Whole grains are the best source of carbohydrates because they provide energy plus vitamins, minerals and fiber.
