How many moles of aluminum do $3.8 \cdot 10^{24}$ $3.8*10^24$ aluminum atoms represent?

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Answer 1 · 2018-07-05T14:08:00

$6.3$ $6.3$ moles

In a mole of aluminium atoms, there exist $6.02 \cdot 10^{23}$ $6.02*10^23$ aluminium atoms. So here, we get:

$(3.8*10^24color(red)cancelcolor(black)(Al \ "atoms"))/(6.02*10^23color(red)cancelcolor(black)(Al \ "atoms")"/mol")$

$~~6.3 \ "mol"$

How many moles of aluminum do 3.8*10^243.8⋅10243.8*10^24 aluminum atoms represent?