The statement that accurately describes dark matter is that It is invisible and It does not emit electromagnetic radiation.
<h3>What is dark matter?</h3>
Dark matter is defined as the particles that makes up most of the mass of galaxies and galaxy clusters. They are also responsible for the way galaxies are organized on grand scales.
The features or characteristics of dark matter is that they are invisible and they do not emit electromagnetic radiation.
Learn more about electromagnetic radiation here:
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Answer:
The molecules in 2,14 mol CO is 1, 29 x 10 ^ 24. See the explanation below, please.
Explanation:
We use the number of Avogadro:
1 mol----- 6, 02 x10 ^23 molecules
2,14 mol---- x =(2,14 mol x6, 02 x10 ^23 molecules )/ 1mol
x=1, 29 x 10 ^ 24 molecules
It would have 11 valance electrons.
Example/Explanation:
Say we are talking about groups 10. Group 10 would have 10 valance electrons because of the atom's electronic arrangement in the periodic table.
Answer:
metalloids
Explanation:
The kind of element most likely used to make semiconductors are the metalloids.
These elements have properties between those of metals and non-metals in that they are not truly metals and are partly non-metals.
- Under certain conditions they show features of metals or non - metals.
- The class of these elements are the metalloids.
- They are used to make semiconductors which are major components of electronics.
1 hectoliter is 26.4172
1 kiloliter is 264.172