Calculate the number of aluminium ions (Al3+) in 0.056 g of alumina (AL203)

CBSE Class 9 CBSE Class 9 Science
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1

Calculate the number of aluminium ions (Al3+) in 0.056 g of alumina (AL203).

Answer:
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2

How did you calculated 0.056 by 102…can you please show the written format so that I’ll know how the answer came??