find the mass of sodium atom in 6.2 gram of sodium oxide
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Formula of sodium oxide is Na
2
O
Molecular weight is =(23)(2)+16=62
62 gram of Na
2
O=1 mole.
620 Grams of Na
2
O=10 moles
∴ Number of moles of sodium oxide in 620 g of it is 10 moles
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