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Georgia [21]
3 years ago
6

How have scientists been able to determine the composition of Earth’s layers?

Chemistry
2 answers:
alexira [117]3 years ago
5 0

I believe scientists have been able to determine the composition of the Earth's layers through seismic waves.  Hope this helped!

-TTL

Viefleur [7K]3 years ago
4 0

Answer:

The correct answer is with the help of seismic waves.

Explanation:

The majority of what we know about the interior of the Earth is mainly because of the seismic waves. These are the waves of energy, which can be a result of earthquakes. The two prime kinds of seismic waves are the surface waves and the body waves.  

The surface waves move only along the Earth's surface, while the body waves move through the interior of the Earth in all the directions. It is the body waves behavior, which has provided the clues to the scientists regarding the composition of the Earth's layers. There are two kinds of body waves, these are the primary and the secondary waves.  

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Explain why the ionization energy to remove a second electron from potassium is higher than the ionization energy to remove four
never [62]

Explanation:

It is more difficult to remove electrons from the second shell or energy level because of the imbalance between the positive nuclear charge and the remaining electrons.

  • The amount of energy required to remove electrons in ground state of an atom is the ionization energy.
  • The first ionization energy is the energy needed to remove the most loosely bound electron of an atom in the gas phase in ground state.
  • The second energy has a greater nuclear pull as it is closer to the nucleus.
  • Both potassium and silicon have the same number of energy levels.
6 0
3 years ago
Which feature do all adult echinoderms have?
Rama09 [41]

The common name to the family member of phylum Echinodermata of marine family is echinoderm. They are usually characterized by a five-fold symmetry, and possess an internal skeleton of calcite plates.  They are found at every ocean depth.

The features of all adult echinoderm are:

- They have a five-fold symmetry.

- Body without segmentation.

- Spiny skin.

- Internal skeleton.

- found at every ocean depth.

4 0
3 years ago
Read 2 more answers
2AI + 3H2SO4 -> Al2(SO4)3 + 3H2
podryga [215]

Answer:

B. 313.8

Explanation:

6 0
3 years ago
What are limitations of models? (choose all that apply.)
Stells [14]

models do not show every detail

no model can possible explain every detail of a scientific phenomena

5 0
4 years ago
How many moles FeBr3 are required<br> to generate 275 g NaBr?<br><br> 2FeBr3 + 3Na₂S → Fe₂S3 +6NaBr
slega [8]

Answer:

0.893mol

Explanation:

n = m ÷ M

= 275 ÷ (23 + 80)

= 2.67 mol

* now use the Mol ratio *

NaBr : FeBr3

6 : 2

2.67 : x

5.67 = 6x

n( FeBr3 ) = 0.893 mol

8 0
2 years ago
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