Answer:
The child might be suffering from impetigo which is the skin disease wherein the children are likely to develop red sores on any part of the body especially, around the nose and mouth.
Explanation:
Impetigo is a skin disease which can appear on any part of the body. It starts with tiny blisters which further starts revealing the moist and red skin. Impetigo is caused by group A <em>Streptococcus</em> and <em>Staphylococcus aureus</em>. It gradually develops into honey colored crust which starts spreading. If the infection penetrates into deeper layers of skin, it can lead to severe complication called ecthyma. impetigo can worsen in case of poor health hygiene and warmer temperatures.
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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.
Your heart has four valves that control the flow of blood in and out of the chambers. There are valves between the atrium and the ventricle on each side of your heart. There is also a valve controlling the flow of blood out of each of your ventricles. The valves are designed to keep blood flowing forward only.
The skeleton is traditionally divided into two major parts: the axial skeleton, which includes the skull, spine, and rib cage; and the appendicular skeleton, which includes the appendages and the girdles that attach them to the axial skeleton.
