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02-11-2016
Chemistry

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How many grams of Na20 are produced when 57.5g of Na reacts?
4N+O2->2Na2O

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Willchemistry Willchemistry

03-11-2016

Molar mass:

Na₂O = 61.97 g/mol
Na = 22.98 g/mol

4 Na + O₂ = 2 Na₂O

4 x 22.98 g Na ---------- 2 x 61.97 g Na₂O
57.5 g Na ---------------- ??

Mass of Na₂O = 57.5 x 2 x 61.97 / 4 x 22.98

Mass of Na₂O = 7126.55 / 91.92

=> 77.53 g of Na₂O

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