How many moles of Cs are there in a sample of Cs that contains 7.10E23 atoms? Steps? :)
6.022 x 10^23 atoms of any matter equals 1 mole.
Thus, moles = 7.1 x 10^23 / 6.022 x 10^23 = 1.179 mole
Note: when it comes down to the Avogadro's number - it doesn't matter what the chemical mater is. Only number of atoms of this matter.
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