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10-04-2017
Chemistry

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How many gram-atoms are in 120-gram sample of calcium metal? How many atoms is this?

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10-04-2017

(sample g/1) X (1 mole/40.078(MW of Ca)) = moles of sample (moles of sample)(6.022 x 10^23( no of atoms)/ 1 mole) = # of atoms in a 120 g sample of calcium Avogadro's number=6.022x 10^23 atoms in 1 mole

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