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identify the number of atoms found in each chemical below: li₂co₃ ? lit…

Question

identify the number of atoms found in each chemical below:
li₂co₃
? lithium atom(s)
? carbon atom(s)
? oxygen atom(s)
al₂(no₃)₃
? aluminum atom(s)
? nitrogen atom(s)
? oxygen atom(s)

Explanation:

Step1: Analyze \(Li_2CO_3\)

  • For lithium (\(Li\)): The sub - script is \(2\), so there are \(2\) lithium atoms.
  • For carbon (\(C\)): There is no sub - script, which is equivalent to a sub - script of \(1\), so there is \(1\) carbon atom.
  • For oxygen (\(O\)): The sub - script is \(3\), so there are \(3\) oxygen atoms.

Step2: Analyze \(Al_2(NO_3)_3\)

  • For aluminum (\(Al\)): The sub - script is \(2\), so there are \(2\) aluminum atoms.
  • For nitrogen (\(N\)): Inside the parenthesis, \(N\) has no sub - script (equivalent to \(1\)), and the outer sub - script is \(3\). Using the multiplication rule (\(1\times3\)), there are \(3\) nitrogen atoms.
  • For oxygen (\(O\)): Inside the parenthesis, the sub - script of \(O\) is \(3\), and the outer sub - script is \(3\). Using the multiplication rule (\(3\times3\)), there are \(9\) oxygen atoms.

Answer:

  • For \(Li_2CO_3\): \(2\) lithium atoms, \(1\) carbon atom, \(3\) oxygen atoms.
  • For \(Al_2(NO_3)_3\): \(2\) aluminum atoms, \(3\) nitrogen atoms, \(9\) oxygen atoms.