A sample of aluminium has a mass of 6.3g, calculate 1.the number of mole of aluminium present.2.the number of atoms of aluminium take(AL=27)

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  1. 1. moles = mass / atomic mass = 6.3 / 27

    2. atoms = moles * Avogadro's number = moles * 6.02E23

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  2. The correct answer

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  3. Mole =mass/molar mass=6.3/13

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  4. Mass/molar mass =6.3/13

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