4Na+O2->2Na2O how many grams of Na2O are produced when 95.7g of Na reacts?

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17-10-2016
Chemistry

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4Na+O2->2Na2O how many grams of Na2O are produced when 95.7g of Na reacts?

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WisdomTree WisdomTree · Answer 1 · 2016-10-17T22:54:07+02:00

WisdomTree WisdomTree

17-10-2016

4Na+O2->2Na2O

Given: 95.7gNa
Unknown: ?gNa2O
Plan: gNa to molNa to molNa2O to gNa2O
Relationships: Na ≈ 23 g/mol and O ≈ 16 g/mol;
Na2O has 2 Na and 1 O so 23*2 = 46+16 = 62 g/molNa2O

Solve: 95.7 gNa * 1 molNa/23 gNa * 2molNa2O/4molNa * 62gNa2O/1molNa2O ≈ 128.99gNa2O

My work might be wrong so please check.

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