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4 Na + O2 ---> 2 Na2O
For the reaction whose balanced equation is as follows, find the number of grams of sodium that must react to produce 42.0 grams of sodium oxide.

Respuesta :

Willchemistry
Molar mass of Na = 23 g/mol

Molar massa of Na2O = 62 g/mol

balanced chemical equation:

4 Na + 1 O2 ------> 2 Na2O

4 . 23 g Na --------------> 2 . 62 g Na2O
x   -------------------------> 42,0  g Na2O

124 x = 3864

[tex]x = \frac{3864}{124} [/tex]

[tex]x = 31,16 g [/tex] of Na

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