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Javier Haas
Chemistry
14 December, 08:29
What is the mass of 4.91 x10^21 platinum atoms?
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Elianna Fischer
14 December, 08:54
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To calculate the mass, go from atoms to moles and moles to grams:
Atoms ... Moles ... Grams
From atoms to moles, use the Avogadro’s no. which is 6.022 x 10^23 and from moles to grams use atomic mass of Pt that is 195.08g.
So, 4.91 x 10^21 Pt atoms x (1 mole Pt / 6.022x10^23 Pt atoms) x (195.08g Pt / 1 mole Pt) = 1.59g Pt
Mass of 4.91 x 10^21 Pt atoms = 1.59g Pt
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