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Murrr4er [49]
3 years ago
7

Which is a way you would expect two animals of the same species to differ?

Chemistry
1 answer:
LuckyWell [14K]3 years ago
5 0
C is the correct answer
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If you were asked to convert 4.2 × 1022 atoms of aluminum to moles, which of the following should you use for the conversion?
DanielleElmas [232]
<span><span>4.2×1022</span>NA</span><span> N_{A} is the avagadro number</span>
7 0
3 years ago
Which substance is a gas at room temperature and atmospheric pressure?
natulia [17]
Ar is a substance that is a gas at room temperature and atmospheric pressure.
8 0
3 years ago
Calculate the molar mass of butane. Butane's rate of diffusion is 3.8 times slower than that of hleium.
Pie

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,

\frac{rHe}{rButane} =3.8=\sqrt{\frac{M(Butane)}{M(He)} } =\sqrt{\frac{M(Butane)}{4.00g/mol} } \\M(Butane)=3.8^{2} \times 4.00g/mol\\M(Butane)=58g/mol

8 0
3 years ago
Read 2 more answers
Draw the structure of each of the following fatty acids, and give the structure its common name.
kogti [31]

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.

3 0
3 years ago
Free points if anyone wants them
PtichkaEL [24]

Answer:

Your so kind, have a good day

Explanation:

5 0
3 years ago
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