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Stoichiometry of Na 2 O

Stoichiometry of Na 2 O. Chelsea Smith Period 3. If 6.12g of SodiumOxide is decomposed using heat, how many grams of Sodium will be produced?. 1. Write a complete and balanced chemical equation. 2Na 2 O 4Na + O 2. 2. Draw a column for each chemical. 2Na 2 O 4Na + O 2.

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Stoichiometry of Na 2 O

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  1. Stoichiometry of Na2O Chelsea Smith Period 3

  2. If 6.12g of SodiumOxide is decomposed using heat, how many grams of Sodium will be produced?

  3. 1. Write a complete and balanced chemical equation 2Na2O 4Na + O2

  4. 2. Draw a column for each chemical 2Na2O 4Na + O2

  5. 3. Write the amount given in the appropriate column 2Na2O 4Na + O2 6.12g

  6. 4. Convert the amount given to moles 2Na2O 4Na + O2 6.12g 6.12g/1 x 1 mole/(2(22.99)+15.999)g = 6.12g/1 x 1 mole/61.979g = 0.098743 moles = 0.0987 moles

  7. 5. Find moles for each of the other chemicalsA. In each of the other columns write the moles of given (x) a fraction. 2Na2O 4Na + O2 0.0987 moles 0.0987moles x (_/_) 0.0987moles x (_/_)

  8. 5. Find moles for each of the other chemicalsB. The numerator of the fraction is the coefficient of that column. 2Na2O 4Na + O2 0.0987 moles 0.0987moles x (4/_) 0.0987moles x (1/_)

  9. 5. Find moles for each of the other chemicalsC. The denominator of the fraction is the coefficient of the given column. 2Na2O 4Na + O2 0.0987 moles 0.0987moles x (4/2) 0.0987moles x (1/2)

  10. 5. Find moles for each of the other chemicalsD. Do math and label as moles. 2Na2O 4Na + O2 0.0987 moles 0.0987moles x (4/2) = 0.0987 x 2 = 0.197 moles 0.0987moles x (1/2) = 0.0494 moles

  11. 6. Convert all moles into grams 2Na2O 4Na + O2 6.12g 0.197moles/1 x 22.99g/1 mole = 4.53g 0.0494 moles/1 x 2(15.999)g/1 mole = 1.58g

  12. 7. Verify the law of conservation of mass 2Na2O 4Na + O2 6.12g 4.53g 1.58g 6.12 g 6.11g

  13. If 6.12g of SodiumOxide is decomposed using heat, how many grams of Sodium will be produced? 4.53 grams of Sodium will be produced.

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