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FrozenT [24]
3 years ago
9

How did Moseley establish a more accurate periodic table?

Chemistry
1 answer:
Elenna [48]3 years ago
4 0
Moseley  established a more accurate periodic table by closer determination of atomic numbers. Through the results of his measurements of the wavelengths of the X-ray spectral lines of a number of elements which showed that the ordering of the elements by atomic number. 
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In your own words what is equilibrium?
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Answer:

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Write a net ionic equation to show how codeine, c18h21o3n, behaves as a base in water.
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Actually, the ionic equation for this is a reversible equation since codeine is a weak base. Any weak base or weak acids do not completely dissociate which makes them a reversible process. The ionic equation for this case is:

<span>C18H21O3N  +  H3O+  </span><=> C18H21O3NH+ +  H2O 

7 0
3 years ago
<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B2.568%20%5Ctimes%205.8%7D%7B4.186%7D%20" id="TexFormula1" title=" \frac{2.568 \ti
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Using a calculator:

(2.568 x 5.8)/4.186 = 3.5581460…
= 3.56 (3sf)

You didn’t specify the correct number of significant figures needed.
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agasfer [191]

Answer:

formula unit

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