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Kamila [148]
3 years ago
6

An atom with how many electrons in its outer shell is most stable

Biology
1 answer:
Naily [24]3 years ago
6 0
The noble gases (Group 18 of the Periodic Table) are a great example, each atom enjoys 8 electrons<span> in its valence shell- with the exception of Helium, which Dania Tabbara reminds us has two because that is the number of electrons required for an atom with 1 electron shell to be stable.</span>
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2. Why is sand not as useful as soil as evidence?
Angelina_Jolie [31]

Answer:

Glass and sand are composed predominantly of silicon.

Explanation:

5 0
3 years ago
Los jugos gástricos presentes en el estómago tienen un pH de aproximadamente1.87 ¿Cuál es la concentración de iones H+ presentes
Varvara68 [4.7K]

Answer:

1,35 * 10 ^ -2 M

Explanation:

Recuerde que pH = -log [H ^ +]

Sea la concentración de iones de hidrógeno [H ^ +]

Si es así, entonces;

-pH = log [H ^ +]

Por lo tanto;

[H ^ +] = Antilog (-pH)

[H ^ +] = Antilog (-1,87)

[H ^ +] = 1,35 * 10 ^ -2 M

6 0
3 years ago
Gene families, such as the globin family of genes in primates are the result of: deficiencies inversions simple translocations d
Maurinko [17]
The answer is duplications.

Gene family consists of several similar genes. Duplications of single genes, exons, multigene families, or whole genome have given rise to families of related genes. The example is the globin family of genes in primates. About 500 million years ago, a duplication of single globin gene began. Much later, during primate evolution, the additional duplications occurred together with some point mutations. So the end result is diversity in globin chains that arose from original globin gene.
5 0
3 years ago
The inner planets are Mercury, Venus, Earth, and Mars. These four planets are small and solid and have few or no moons. All but
dimulka [17.4K]
The topics being compared and contrasted are inner and outer planets.
8 0
2 years ago
The primers you used in lab amplified 145 base pairs that were adjacent, but not included in the repeat. If you used a different
Ronch [10]

Answer:

3 repeats

Explanation:

PCR technique used to make multiple DNA copies from a segment or small sequence of DNA that is called primer for identification or detection of the pathogen.

given:

Primer amplified base pairs - 130  that are adjacent to - 14 base pair repeats.

PCR product size was 172

So, the extra nucleotide that we get would be = product size - primer amplified

172- 130 = 42 bp

Extra repeats you got = 42/14= 3 repeats

8 0
3 years ago
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