A) The greater the pressure,the greater the solubility.
B) The greater the pressure,the lower the solubility.
C) You cannot change solubility of a substance by changing the pressure.
D) Nitrogen is not soluble in your blood.
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A) 0.5 L of a 3 molar solution
B) 3.0 L of a 0.5 molar solution
C) 2.0 L of a 1 molar solution
D) 0.5 L of a 1 molar solution
E) 2.0 L of a 2 molar solution
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A) Since concentration depends on how much mass is dissolved in a given volume,as the volume increases,the concentration decreases.
B) The concentration of a solution increases as the solute fits into the new spaces between the molecules.
C) Since it has a greater ability to dissolve more solute at a higher temperature,its concentration has decreased.
D) Since it has a greater ability to dissolve more solute at a higher temperature,its concentration has increased.
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A) homogeneous mixture called a solution.
B) homogeneous mixture called a suspension.
C) heterogeneous mixture called a solution.
D) heterogeneous mixture called a suspension.
E) pure liquid.
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A) 20 g
B) 10 g
C) 0 g
D) 30 g
E) 33 g
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A) The nonpolar molecules are too large for the space through which they need to pass.
B) The nonpolar molecules are repelled by the polar water molecules.
C) The nonpolar molecules have a difficult time getting past the ionic heads of the fatty acid molecules,which are surrounded by water molecules.
D) Nonpolar molecules tend to bind with the bilipid layer,thus inhibiting their passage.
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A) As temperature goes up,the solubility goes up.
B) As temperature goes down,the solubility goes down.
C) As temperature goes up,the solubility stays the same.
D) As temperature goes down,the solubility goes up.
E) both A and B
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A) They have a polar ionic end and a long nonpolar tail.
B) Both dissolve oils.
C) Both are synthetic.
D) Both are biodegradable.
E) Both are made from fatty acids.
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A) The hydrogens on the dimethyl ether surround the molecule,shielding the inner atoms from interacting with the water.
B) Because the carbons arrange themselves in a straight line,the ethanol can interact more easily with more water molecules,thus increasing its solubility.
C) The high electronegativity of the carbon-oxygen-carbon bond on dimethyl ether creates a strong dipole charge on the ends of the molecule,making it highly soluble in water.
D) Because dimethyl ether lacks an -OH group,it is significantly less polar than is ethyl alcohol and is not readily soluble in water.
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A) element: A,C; compound: A,B,C; mixture: A,B
B) element: C; compound: A,B; mixture: B
C) element: A,C; compound: A,B; mixture: A
D) element: A,C; compound: A,B; mixture: A,B
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A) agricultural runoff
B) sea water
C) brackish water
D) All of the above are the same.
E) None of the above can be purified by reverse osmosis.
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A) one liter of solution that contains 2 moles of sucrose
B) one liter of solution that contains 2 moles of water
C) one liter of solution that contains 6.02 × 1023 molecules of sucrose
D) two liters of solution that contains 1 mole of sucrose
E) one mole of sucrose dissolved in 2 liters of solution
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A) a suspension
B) a heterogeneous mixture
C) a solution
D) an element
E) a compound
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A) the water moves into the concentrated solution faster than it leaves.
B) the ions move into the concentrated solution faster than they leave.
C) the water moves more slowly into the concentrated solution than it leaves.
D) the ions move into the concentrated solution slower than they leave.
E) all of the above
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A) Impurities aren't necessarily bad,in fact,they may be good for you.
B) The water contains water molecules and each water molecule is pure.
C) There's no defense.If the water contains impurities it should not be drunk.
D) Compared to the billions and billions of water molecules,a thousand molecules of something else is practically nothing.
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A) Water's attraction for itself is stronger than its attraction for oxygen molecules.
B) Water and oxygen only attract one another by means of weak dipole-induced dipole attractions.
C) The hydrogen bonding in water keeps the oxygen solubility low.
D) Both A and B are true.
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A) 8 M
B) 4 M
C) 5 M
D) 2.5 M
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A) The solute can have infinite solubility in the solvent.
B) The solute does not dissolve in the solvent.
C) The material has only limited solubility in the solvent.
D) The solution will become saturated.
E) none of the above
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A) a compound
B) a mixture
C) an element
D) none of the above
E) all of the above
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A) The more concentrated solution absorbs water from the less concentrated solution.
B) The less concentrated solution absorbs water from the more concentrated solution.
C) The less concentrated solution gets more dilute.
D) The ions migrate from the more concentrated solution to the less concentrated.
E) none of the above
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