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the atomic difference between uranium-235 and uranium-238 is that <span>uranium-235 has three fewer neutrons than uranium-238
Isotopes are atoms of the same elements which are only different in their amount of neutrons. That difference in the number of neutrons gives them different masses. Some isotopes are unstable, and they release neutrons (radiation) to transform into other, more stable, isotopes. When this happens the isotope is called a "radioactive isotope".
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13.29 X 
moles of NaCl are in a pinch of salt and a pinch of salt has
approximately 3.29x formula units of NaCl.
<h3>What are moles?</h3>
The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon 12; its symbol is “mol”.
We know that 1 formula unit of sodium chloride has a molar mass of 58.44g/mol
Hence;
Mass of 1 formula unit = 58.44g
Mass of 3.29 x formula units
13.29 x x 58.44g
776.6676 x
Moles =
Moles = 13.29 X
Therefore;
13.29 X moles of NaCl are in a pinch of salt.
Learn more about moles here:
brainly.com/question/15209553
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Answer:
Scale Factor: 1 : 2
X = 11
Explanation:
3 / 3 = 1
6 / 3 = 2
The scale factor should be 1:2
So 'X' should be 11 since 5.5 * 2 = 11
The Constitutions was designed to be flexible so new laws can be added as needed and old laws can be reinterpreted
