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NOTES: Gases, Molar Volume, & Stoichiometry – a REVIEW!

NOTES: Gases, Molar Volume, & Stoichiometry – a REVIEW!. Avogadro’s Hypothesis:. ● equal volumes of gases at the same temperature and pressure contain equal #’s of particles ; ● at STP, 1 mol (6.02 x 10 23 ) of particles of any gas occupies a volume of 22.4 L. Example #1 :.

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NOTES: Gases, Molar Volume, & Stoichiometry – a REVIEW!

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  1. NOTES: Gases, Molar Volume, & Stoichiometry – a REVIEW!

  2. Avogadro’s Hypothesis: ● equal volumes of gases at the same temperature and pressure contain equal #’s of particles; ● at STP, 1 mol (6.02 x 1023) of particles of any gas occupies a volume of 22.4 L.

  3. Example #1: What volume does 0.742 mol of argon gas occupy at STP?

  4. Example #1: What volume does 0.742 mol of argon gas occupy at STP?

  5. Example #1: What volume does 0.742 mol of argon gas occupy at STP? = 16.6 L

  6. Example #2: How many oxygen molecules are in 3.36 L of oxygen gas at STP?

  7. Example #2: How many oxygen molecules are in 3.36 L of oxygen gas at STP?

  8. Example #2: How many oxygen molecules are in 3.36 L of oxygen gas at STP? = 9.03 x 1022 molecules

  9. Example #3: Determine the volume (in L) occupied by 12.6 g of nitrogen gas, N2, at STP.

  10. Example #3: Determine the volume (in L) occupied by 12.6 g of nitrogen gas, N2, at STP.

  11. Example #3: Determine the volume (in L) occupied by 12.6 g of nitrogen gas, N2, at STP. = 10.0 L N2

  12. Stoichiometry Example #1: Li3N(g) + 3H2O(l) NH3(g) + 3LiOH(aq) What mass of water is needed to react with 29.3 L of Li3N?

  13. Stoichiometry Example #1: Li3N(g) + 3H2O(l) NH3(g) + 3LiOH(aq) What mass of water is needed to react with 29.3 L of Li3N?

  14. Stoichiometry Example #1: Li3N(g) + 3H2O(l) NH3(g) + 3LiOH(aq) What mass of water is needed to react with 29.3 L of Li3N? = 70.6 g H2O

  15. Stoichiometry Example #2: Li3N(g) + 3H2O(l) NH3(g) + 3LiOH(aq) When 13.3 L of NH3 are produced how many formula units of LiOH are produced?

  16. Stoichiometry Example #2: Li3N(g) + 3H2O(l) NH3(g) + 3LiOH(aq) When 13.3 L of NH3 are produced how many formula units of LiOH are produced?

  17. Stoichiometry Example #2: Li3N(g) + 3H2O(l) NH3(g) + 3LiOH(aq) When 13.3 L of NH3 are produced how many formula units of LiOH are produced? = 1.07 x 1023 formula units LiOH

  18. Stoichiometry Example #3: Li3N(g) + 3H2O(l) NH3(g) + 3LiOH(aq) Given 112.5 grams of LiOH produced, what volume (L) of Li3N was used?

  19. Stoichiometry Example #3: Li3N(g) + 3H2O(l) NH3(g) + 3LiOH(aq) Given 112.5 grams of LiOH produced, what volume (L) of Li3N was used?

  20. Stoichiometry Example #3: Li3N(g) + 3H2O(l) NH3(g) + 3LiOH(aq) Given 112.5 grams of LiOH produced, what volume (L) of Li3N was used? = 35.1 L Li3N

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