Chemistry Test 2

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bressler1
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239626
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Chemistry Test 2
Updated:
2013-10-08 21:29:53
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Abeka chemistry test two
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Abeka Chemistry test two
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  1. set of symbols that tells how many of each type of atom are found
    molecular formula
  2. formula unit of a compound equivalent
    empirical formula
  3. sum of all the atomic masses of all the atoms in a molecule
    molecular mass
  4. is equivalent to Avagadro's number of objects
    mole
  5. law of conservation of mass
    the sum of the masses of the product is always equal to the sum of the masses of the reactants
  6. one
    mono
  7. two
    di
  8. five
    penta
  9. six
    hexa
  10. seven
    hepta
  11. nine
    nona
  12. Avogadro's number
    6.022 x 1023
  13. always the simplest of ratios
    empirical formula
  14. Empirical formula for: C6H12O6
    C1H2O1
  15. (NH4)2SO4
    ammonium sulfate
  16. SF6
    sulfer hexafloride
  17. CO2
    carbon dioxide
  18. NaOH
    sodium hydroxide
  19. Fe(NO3)2
    Iron (II) nitrate
  20. nitrate ion
    NO3-
  21. sulfate ion
    SO42-
  22. Iron (II) ion
    Fe2+
  23. ammonium ion
    NH4+
  24. Copper (I) hydroxide ion
    Cu+OH
  25. calcium carbonate
    CaCO3
  26. lead (II) ion (Charge)
    2+
  27. Hydrogen ion (charge)
    1+
  28. Chloride ion (charge)
    1-
  29. phosphate ion (charge)
    3-
  30. If the empirical formula of a substance is known, what additional information is needed to calculate the molecular formula?
    the molar mass
  31. Find the molecular mass of CH4
    M CH4= 12.81u + 4(1.008u) =16.04u
  32. Find the Empirical Formula
    H=5.93%
    0=94.07%
    • H=5.93% of 100.0g = 5.93g
    • 0=94.07% of 100.0g = 94.07g

    • 5.93g H/1.008gmol H= 5.88 mol H
    • 94.07g O/16.00gmol O= 5.879 mol O

    • H= 5.88/5.879 = 1.0
    • O= 5.879/5.879 = 1.0

    Empirical formula= HO
  33. Find the Molar Mass for AgCl
    • Ag (107.9 g/mol) + Cl (35.45 g/mol)
    • MAgCl= 143.35 or 143.4 g/mol

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