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Stoichiometry

Stoichiometry. Pd 5 3/17/10. What mass of Na 2 O 2 is produced when 3.74 g of Na and 5.34 of O 2 react?. 1 st balance the equation. What is the correct balanced equation?. Incorrect Answer.

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Stoichiometry

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  1. Stoichiometry Pd 5 3/17/10

  2. What mass of Na2O2is produced when 3.74 g of Na and 5.34 of O2 react?

  3. 1st balance the equation • What is the correct balanced equation?

  4. Incorrect Answer This is wrong because there is 4 O’s on the reactant side, but only 2 O’s on the product side making it not balanced Back to question

  5. Incorrect Answer This answer is incorrect because the Na’s are not balanced. On the left side there is 1 Na and on the right there is 2 Na’s. Back to question

  6. Correct Answer This is the correct answer because there are 2 Na’s and 2 O’s on both sides of the equation.

  7. 1st Step

  8. Correct • What’s the next step?

  9. Incorrect • Remember to get the number of moles from the equation. Back to problem

  10. Correct... and the next step is?

  11. Incorrect • Make sure that you use the periodic table to find grams!

  12. Correct! What’s the answer? 6.34gNa2O2 16.22gNa2O2

  13. Incorrect • Check your math! Back to problem

  14. Correct! • What’s the final step of the problem?

  15. Incorrect • Make sure you are setting up the problem correctly, and everything is canceling out Back to problem

  16. Correct! Now the answer to Is? 21.13gNa2O2 13.01gNa2O2

  17. Incorrect • Make sure you are doing the calculations right. Back to problem

  18. Correct! • So which is the limiting reactant? O2 Na

  19. Incorrect. • Hint: It’s the one that makes the smallest amount. Back to problem

  20. Correct! • Yay good job! You are the master of stoichiometry!

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