Calculate the number of moles present in 54 grams of aluminium sample. (Molar mass of aluminium is 27).

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0.5

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Cannot be determined

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Solution

The correct option is A 2
Number of moles = $\frac{G i v e n m a s s o f e l e m e n t}{M o l a r m a s s o f e l e m e n t}$

Molar mass of aluminium is 26 grams
Mass of aluminium in the sample is 52 grams
Therefore, number of moles = $\frac{52}{26} = 2$

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Calculate number of moles in 270g of Aluminium .Atomic mass of Al - 27

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