If you were asked to convert 4.2 X 10^22 atoms of aluminum to moles, which of the following should you use for the conversion?

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\[\frac{ 4.2 \times 10^{22}}{ N_{A} }\]
N_{A} is the avagadro number

yea sure :)

1mole of any substance has 6.022 x 10^23 particles of it

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