How many atoms are in 2 Al3O₂?
0 10
8
05
The Correct Answer and Explanation is :
To find the total number of atoms in 2 Al₃O₂, follow these steps:
- Identify the atoms in one Al₃O₂ molecule:
- In Al₃O₂, there are 3 aluminum (Al) atoms and 2 oxygen (O) atoms.
- So, 1 Al₃O₂ molecule contains:
- 3 Al atoms
- 2 O atoms
- Total atoms in 1 Al₃O₂ molecule = 3 (Al) + 2 (O) = 5 atoms.
- Multiply by 2 (since you have 2 Al₃O₂ molecules):
- 2 Al₃O₂ molecules contain:
- 2 × 3 Al atoms = 6 Al atoms
- 2 × 2 O atoms = 4 O atoms
- Total atoms in 2 Al₃O₂ molecules = 6 Al + 4 O = 10 atoms.
Conclusion:
There are 10 atoms in 2 Al₃O₂ molecules.
Explanation:
Atoms are the basic units of matter, and in a chemical formula, each element is represented by its symbol followed by a subscript indicating how many atoms of that element are present in the molecule. For Al₃O₂, the subscript tells us that there are 3 aluminum atoms and 2 oxygen atoms. When the coefficient (2) is applied to the whole formula (2 Al₃O₂), it affects the number of atoms of each element. By multiplying the number of atoms of each element in the molecule by the coefficient, we calculate the total number of atoms in the compound.
Therefore, the total number of atoms in 2 Al₃O₂ molecules is 10, comprising 6 aluminum atoms and 4 oxygen atoms.