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17-09-2016
Chemistry

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how many moles of sodium atoms in 255 grams of na2so4

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17-09-2016

[tex]M_{Na_{2}SO_{4}}=142\frac{g}{mol}\\ m=255g\\\\ n=\frac{m}{M}=\frac{255g}{142\frac{g}{mol}}\approx1,8mol\\\\ 1,8mol*2=3,6mol \ of \ sodium \ atoms[/tex]

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