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Answer:

Chemists generally use the mole as the unit for the number of atoms or molecules of a material. One mole (abbreviated mol) is equal to 6.022×1023 molecular entities (Avogadro's number), and each element has a different molar mass depending on the weight of 6.022×1023 of its atoms (1 mole).\

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Explanation:

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1 mole of (NH₄)₂CO₃ has:

  • 2 moles of N atoms.
  • 8 moles of H atoms
  • 1 mole of C atoms.
  • 3 moles of O atoms.

Let's consider the chemical formula of ammonium carbonate: (NH₄)₂CO₃.

The subscripts inform us of the number of moles of atoms in 1 mole of molecules.

Nitrogen has 2 subscripts: "1" (which is not written) and "2" (outside the parenthesis). The global subscript for nitrogen is obtained by multiplying both subscripts.

[tex]N: 1 \times 2 = 2[/tex]

Hydrogen has 2 subscripts: "4" and "2" (outside the parenthesis). The global subscript for nitrogen is obtained by multiplying both subscripts.

[tex]H: 4 \times 2 = 8[/tex]

The subscript for carbon is "1".

The subscript for oxygen is "3".

1 mole of (NH₄)₂CO₃ has:

  • 2 moles of N atoms.
  • 8 moles of H atoms
  • 1 mole of C atoms.
  • 3 moles of O atoms.

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