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118.7 is close to the 118.96 grams per mole (mass) of tin. So we can call that one mole. 1 mole is equal to 6.022x10^23 (avogadro's number which is the number of atoms per mole of an element).

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13y ago
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13y ago

250 (g Sn) / 118.710 (g/mol Sn) = 2.106 mol Sn =

= 2.106 * 6.02*1023 (atoms / mol) = 1.27*1024 atoms of Sn (Tin)

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11y ago

2.95 X 1024 atoms tin (1 mole Sn/6.022 X 1023)(118.7 grams/1 mole Sn)

= 581 grams of tin

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Q: How many atoms of tin are in 118.7 g of tin?
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