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Tin, element 50 on the periodic table, has 10 stable isotopes. 117^Sn makes up 7.687% of naturally occurring tin atoms. How many atoms of 117^Sn are present in 72.00 g of naturally occurring tin?

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Tin, element 50 on the periodic table, has 10 stable isotopes. 117^Sn makes up 7.687% of naturally occurring tin atoms. How many atoms of 117^Sn are present in 72.00 g of naturally occurring tin?  

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Step 1

Using the formula moles of Sn117...

Mass of snl17
Number of moles
Molarmass of snl17
72.00g 0.615 mole
117 g/mo
-0.62 mol
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Mass of snl17 Number of moles Molarmass of snl17 72.00g 0.615 mole 117 g/mo -0.62 mol

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