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Stells [14]
3 years ago
10

Matching up of homologous pairs of chromosomes happens during

Chemistry
1 answer:
marin [14]3 years ago
5 0
Your correct answer is Synapsis
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In nuclear fission, atomic nuclei are
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C. The answer is detroyed
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17. An industrially important element contains
likoan [24]

Answer:

Iron (Fe)

Explanation:

The number of electrons (-) is usually the same as the number of protons (+) in the atom of the element (unless it is an ion).

The element described has 26 electrons, so we can assume that it has 26 protons as well. The number of protons in an atom is the atomic number of element that the atom is.

Element 26 on the PTE is Iron (Fe), which does rust (oxidation) in air and water.

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If you were asked to go to the chemical storage area and retrieve a bottle of “sulfate,” could you do so? Explain. (Assume you h
Evgesh-ka [11]

IT IS NOT POSSIBLE TO RETRIEVE A BOTTLE OF SULFATE BECAUSE SULFATE DOES NOT EXIST AS A DISTINCT CHEMICAL COMPOUND.

Sulphate is a polyatomic ion. A polyatomic ions refers to group of atoms that carry charges. Sulfate carries a charge of +2. Sulfate is a very reactive ion, thus, it can not be found existing on its own, it is always found in combination with other elements, such elements include H2SO4 and CaSO4.

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3 years ago
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Explain why the design of the bird's nest in the picture provides good insulation for the eggs.
gizmo_the_mogwai [7]

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First, the lining may consist of loose, smaller bits of the same materials that have been incorporated into the latticework of the nest. These finer materials are utilized to shed water, deter pests, conceal the eggs from predators, insulate, and cushion them. ... They also serve to insulate and cushion the eggs.

Explanation:

4 0
4 years ago
Sodium has an atomic number of 11 and has a net charge of 0. When sodium combines with chlorine, it has a net charge of +1. Why?
lana [24]
Sodium has an atomic number 11, it means there are 11 electrons in sodium atom and has a net charge zero what when it combines with chlorine it loses one electron and get charge of +1. when and atom loses an electron it gets positive charge and when atom gains electron it gets negative charge. chlorine makes an anion and sodium makes cation and they are oppositely charged so they react with each other.
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4 years ago
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