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romanna [79]
2 years ago
9

On Darwin's tree of life, organisms at the base of

Chemistry
2 answers:
bazaltina [42]2 years ago
7 0
The correct answer is part A
masya89 [10]2 years ago
3 0
B - Evolve into the closest species on the tree’s trunk
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Why does ammonia gas diffuse faster than hydrogen chloride gas?
Yakvenalex [24]
The ammonia gas, having a lower molecular weight than the hydrogen chloride, will diffuse faster and travel a greater length of the tube. Consequently, the white ring of ammonium chloride will form much closer to hydrochloric acid end of the tube. Which in conclusion your answer will be D :)
4 0
2 years ago
When a small amount of 12 M HNO3(aq) is added to a buffer solution made by mixing CH3NH2(aq) and CH3NH3Cl(aq) , the pH of the bu
fredd [130]

Answer:

a. CH3NH2(aq) + H⁺ → CH3NH3⁺

Explanation:

The mixture of a weak base as CH3NH2 with its conjugate acid CH3NH3Cl produce a buffer. As the weak acid is in equilibrium with water, the mixture of the weak base and its conjugate base produce that the acid or base released react avoiding the change in pH.

For example, when a strong acid as HNO3 reacts, the weak base will react producing the conjugate base, that is:

CH3NH2(aq) + H⁺ → CH3NH3⁺

Right answer is:

<h3>a. CH3NH2(aq) + H⁺ → CH3NH3⁺</h3>

5 0
2 years ago
The physical and chemical properties of a molecule depend on its structure. Here are two ball-and-stick models for two compounds
djyliett [7]

Answer:

Ethanol has covalent intramolecular bonds. Ethanol is polar. Ethanol has dispersion intermolecular forces. Dimethyl ether is polar. Dimethyl ether forms hydrogen bonds. Dimethyl ether has dispersion intermolecular forces.

Explanation:

Ethanol is not a carboxylic acid. It is an alcohol and it has covelent intramolecular bonds. It is polar and it also has dispersion intermolecular forces.

Dimethyl ether is also polar and it has forms hydrogen bonds. It also has dispersion intermolecular forces. Dimethyl ether does not have ionic intramolecular forces

7 0
3 years ago
Read 2 more answers
Write in exponential form: 34⋅34⋅34⋅34⋅34⋅34⋅34⋅34.
kvv77 [185]

Answer:

34^8

Explanation:

7 0
2 years ago
Which of the following is not a correct chemical equation for a double displacement reaction? (D?)
emmasim [6.3K]
The correct answer would be the last option. A double displacement type of reaction involves the switching of places the cations and anions accordingly. The given reaction is erroneous since in the product side the anions and cations are being paired which would not make sense. The correct reaction should be 

4NaBr + Co(SO3)2 yields <span>CoBr4 + 2Na2SO3</span>
6 0
3 years ago
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