<span><span>4.2×1022</span>NA</span><span> N_{A} is the avagadro number</span>
Ar is a substance that is a gas at room temperature and atmospheric pressure.
Answer:
58 g/mol
Explanation:
According to Graham's law, the rate of diffusion of a gas (r) is inversely proportional to the square root of its molar mass (M). Butane's rate of diffusion is 3.8 times slower than that of helium, that is, rButane = rHe/3.8, or rHe/rButane = 3.8. Then,

Answer:
Structure 1- dodecanoic acid (lauric acid)
Structure 2- hexadecanoic acid (palmitic acid)
Structure 3- octadecanoic acid (stearatic acid)
Explanation:
Fatty acids are carboxylic acids having long aliphatic chain. The chain may be either saturated or unsaturated. There are many naturally occurring fatty acids having unbranched chain of an even number of carbon atoms.
Usually, the common name of the fatty acid is not related to its systematic name. Its systematic name is obtained by IUPAC nomenclature.
The images shown are the skeletal structures of lauric acid, palmitic acid and stearic acid. I have written the names of the acids because the question specifically mentions that the compounds are fatty acids and not their salts.
Answer:
Your so kind, have a good day
Explanation: