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Science TNSB Mentoring
Class 10 Crash course
Atoms and molecules
Molecular Mass, percent composition, and vapour density
2.
Finding number of moles of substances containing atoms
Question:
3
m.
Write the correct answer:
Identify the number of moles of a substance that contains \(14.046\times10^{23}\) atoms of iron.
Note:
Give the answer in three decimal place.
Formula:
Number of moles =
Number of atoms/Avogadro's number
Avogadro's number/Number of molecules of water
Weight of water/Number of molecules of water
Number of molecules of water/Mass number
Answer:
\(mol\)
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