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3 years ago

Which of the following phase changes is an endothermic change?

Biology

2 answers:

kherson [118]3 years ago

4 0

Answer: The correct answer is B) Vaporization.

A process is called endothermic when it absorbs energy from surrounding. In other words, if energy is consumed in any process then it is termed endothermic change. When any process releases energy in the surrounding then it is called exothermic process.

In vaporization, energy is absorbed by water molecules, which form vapors. Thus, it is an endothermic change.

On the contrary, in condensation, deposition, and freezing, the new bonds are being formed and thus energy is released in the surrounding. Therefore, they are exothermic process.

kirill [66]3 years ago

3 0

I think the correct answer from the choices listed above is option B. The phase change that is an endothermic change would be vaporization. This includes melting and sublimation. Hope this answers the question. Have a nice day.

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In rabbits, short hair (S) is dominant over long hair (s). What genotype and phenotype ratios are

Kazeer [188]

Answer:

Genotype Phenotype

SS 1/4 Short hair 3/4

Ss 2/4 Short hair 3/4

ss 1/4 Long hair 1/4

Explanation:

The resulting off-spring would have the following genotype and phenotype:

1 out of 4 will have a genotype of SS.

2 out of 4 or half will have a genotype of Ss.

1 out of 4 will have a genotype of ss.

But because short hair is dominant the phenotype ratios would differ because Ss and SS would express short hair, so we add up their ration:

Short hair: 1/4 + 2/4 = 3/4

Long hair: 1/4

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3 years ago

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spayn [35]

D. Producers/autotrophs can convert energy from the sun into a form that is available for consumers/heterotrophs to use.

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3 years ago

A meter stick or meter tape is used to measure the length, width, or height of an object. A meter stick is most often divided an

Ludmilka [50]

Answer:

a centimeters

Explanation:

I think this is right. has both centimeters and millimeters but centimeters are labeled

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3 years ago

True or False. The net force on an object is the combination of all the forces acting on the object.

sleet_krkn [62]

This is True

Hope this helps

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3 years ago

What do scientists hope to accomplish using recombinant DNA?

Ber [7]

The correct answer is: Replacement of defective genes with normal genes

Recombinant DNA molecules are made in laboratory by the methods of genetic recombination such as molecular cloning. The aim of these methods is to bring together genetic material from different sources, creating “combinations” that usually couldn’t be found in the genome. The process of recombination is possible because, DNA molecules from all organisms share the same chemical structure (nucleotides are same among different species, difference is only in the nucleotide sequence).

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3 years ago