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catsheGises7un
catsheGises7un catsheGises7un
  • 07-01-2016
  • Chemistry
Answered

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.

Verified Answer :

Willchemistry
Willchemistry Willchemistry
  • 10-01-2016

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

\(x = \frac{3864}{124}\)

\(x = 31,16 g\) of Na

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