CHEMISTRY FINAL

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Author:
mLy
ID:
18958
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CHEMISTRY FINAL
Updated:
2010-05-12 00:58:39
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chemistry final
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chemistry
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  1. What is the circumference of a bastketball?
    • 75 cm.
  2. what is SOLUBILITY?
    the ability of a SOLUTE to dissolve in a SOLVENT
  3. solubility depends upon what?
    temperature
  4. what is SATURATION POINT?
    achieved when the max amount of solute has dissolved in the solvent
  5. water volume conversions
    • 1000ml = 1L
    • 1gm of H20 = 1 cm3 (cubic centimeter)
    • 1 cm3 (cc) = 1 ml

    1000ml = 1L = 1000 cm3 = 1000 cc = 1000ml
  6. formula for CONCENTRATION
    CONCENTRATION = AMOUNT of SOLUTE / AMOUNT of SOLVENT
  7. CONCENTRATION

    15.0 gm / .1L = ?
    1500 gm/L
  8. CONCENTRATION

    100gm / .1L = ?
    1000 gm/L
  9. CONCENTRATION

    10gm / .1L = ?
    100 gm/L
  10. what is the maximum dissolved? (not sure if this is true)
    200 gm/L
  11. 1 Mole = ?
    6.02 * 10 23 Particles
  12. why is the mole a magic number?
    because 1 mole of any gas at S.T.P (standard temperature pressure) occupies 22.4 L
  13. 1000 cm3 = 1L so, 22.4 L = ?
    22,400 cm3
  14. 1 Gopher = ?
    10 particles
  15. how many gram of O-atom equal 1 mole?
    16 grams
  16. if 16 grams of O-atom equals 1 mole
    a. how much is 32 grams of O-atom?
    b. how much is 22.2 grams of NE-atom?
    • a. 2 moles
    • b. 1 mole
  17. what is 1 mole of NaCl molecules (mass = ?), if Na = 23 gm/mole and Cl = 35.5 gm/mole?
    59 gm / mole
  18. how many grams/mole is sucrose (sugar molecules)?
    342 gm/mole
  19. formula for CONCENTRATION MOLARITY
    CONCENTRATION (molarity) = # of moles of solute / liters of solvent (H2O)
  20. what are two main classes of chemical RXNs?
    • 1. acid - base rxn
    • 2. oxidation - reduction

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