Calculate the number of aluminium ions present in 0.051 g of aluminium oxide.
(Hint: The mass of an ion is the same as that of an atom of the same element. Atomic mass of Al = 27 u)

Options

A. `6.023xx10^20` ions
B. 3 ions
C. `6.023xx10^23` ions
D. 9 ions

Explanation

To calculate the number of aluminum ions present in 0.051 g of aluminum oxide (Al₂O₃), we will follow these steps:

### Step 1: Calculate the molar mass of aluminum oxide (Al₂O₃)
The molar mass of aluminum oxide can be calculated using the atomic masses of aluminum (Al) and oxygen (O).

- Atomic mass of Al = 27 g/mol
- Atomic mass of O = 16 g/mol

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