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Lyrx [107]
2 years ago
13

The motion of this wave vibrates up and down.

Chemistry
1 answer:
NISA [10]2 years ago
7 0

Answer:

the answer is c). transverse wave

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With reference to He-4 (or the diagram), explain the term isotopes.
boyakko [2]

Answer:

Isotopes are basically atoms of an element that have an unequal number of neutrons and protons. Of course the proton number remains the same, but the neutron number either decreases or increases, which leads to an overall change in mass. However, no chemical properties of the atom/element are changed as the electrons are the same number and do not react. In regards to Helium 4, the original number of neutrons in Helium is 2, and protons 2 as well. We see an equal number of neutrons and protons, hence an unchanged mass, and the element is <em>not</em> an isotope.

6 0
3 years ago
A smoke sample contains dust particles and several different gases, which have different combinations of molecules. the dust par
Vsevolod [243]
The sample of smoke described above can be described as a heterogeneous mixture. This type of mixture do not have uniform properties and composition. So, getting a certain small sample would not represent the whole mixture since it does not have uniform composition. 
7 0
3 years ago
Why potassium by sulphite or KHSO4 donot preserve meat
Debora [2.8K]

Answer:

Postassium bisulphate - KHSO4 - can be used as an food preservative to protect the food from micro-organisms.

4 0
3 years ago
Why aren’t two hydrogen atoms bonded together considered a compound?
Art [367]

Answer:

A compound by definition contains at least 2 different kinds of atoms. A Hydrogen molecule contains only one kind of atom, 2 hydrogen atoms

4 0
3 years ago
Calculate the concentration of hi when the equilibrium constant is 1x10^5
exis [7]
Answer is: concentration of hydrogen iodide is 6 M.

Balanced chemical reaction: H₂(g) + I₂(g) ⇄ 2HI(g).
[H₂] = 0.04 M; equilibrium concentration of hydrogen.
[I₂] = 0.009 M; equilibrium concentration of iodine.
Keq = 1·10⁵.
Keq = [HI]² / [H₂]·[I₂].
[HI]² = [H₂]·[I₂]·Keq.
[HI]² = 0.04 M · 0.009 M · 1·10⁵.
[HI]² = 36 M².
[HI] = √36 M².
[HI] = 6 M.
5 0
3 years ago
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