chem305 quiz #9

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Author:
mellowscuffsoul
ID:
228788
Filename:
chem305 quiz #9
Updated:
2013-07-31 23:58:42
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chemistry 305 solutions
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solutions
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  1. The number of components in a solution is?
    at least 2
  2. what is the best way to explain the meaning of the phrase "like dissolves like"?
    a solvent and solute with similar intermolecular forces will readily form a solution.
  3. water can be used to dissolve which type of compounds?
    polar and ionic compounds
  4. which solution has the smallest osmolarity? 
    a)0.6 M NaCl
    b).14 M KF
    c)0.10 M KNO3
    C
  5. In general the solubility of "       " in water decreases as temperature increases.
    gases.
  6. M is the abbreviation of molarity? 

    true or false
    true
  7. molarity is the interpretation of the symbol is "moles of solute per mole of solvent"

    true or false
    false
  8. according to molarity: n=MV

    true or false
    true
  9. according to molarity: V = n/M

    true or false
    true
  10. the molarity of a diluted solution is less than the molarity of the original solution. 

    true or false?
    true
  11. how many grams of NaOH are needed to make 750mL of a 2.5% (w/v) solution?
    19g
  12. what is the % (w/v) concentration of a solution containing 12 grams of solute in 400mL of solution?
    3.0%
  13. what is the molarity of a solution prepared by dissolving 48.0 g of NaOH in enough water to make 1.50 L of solution?
    .800 M
  14. How many moles of solute are present in 12.0 L of 3.00 M HCl?
    36.0 mol
  15. how many grams of FeSO4 are present in a 20.0mL sample of a 0.500 M solution?
    1.52 g
  16. A 50.0 mL sample of a 6.0 M solution of HCl is diluted to 200 mL. What is the new concentration?
    1.50 M
  17. If "A" contains 2% NaCl and is separated by a semipermeable membrane from "B" which contains 10% NaCl, what will flow? and which side will it flow?
    water will flow from A to B

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