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CHEM 104 Final Exam/133 Questions with Answers 2024
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CHEM 104 Final Exam/133 Questions with Answers 2024
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CHEM 104 Final Exam/133 Questionswith Answers 2024
what can serve as the solvent in a solution? liquid, solid, gas, or all of the
above. - -all of the above
-a homogeneous mixture consists of 12% ethanol, 28% methanol, and 60%
water. what is the solvent? water, methanol, ethanol, or ethanol + methanol
- -water
-in a solution, the solute is: - -the substance that is dissolved
-example of colloid: grape juice, homogenized milk, blood, or kool-aid. - -
homogenized milk
-example of suspension: blood, homogenized milk, apple juice, or mayo. - -
blood
-unknown liquid that is insoluble in water but not in benzene (an aromatic
hydrocarbon solvent). what type of molecule is unknown? polar, nonpolar,
neither polar or non polar, or both polar and non polar - -nonpolar
-solubility of _________ in water decreases as temperature increases. liquids,
solids, or gases? - -gases
-which compound will be most soluble in hexane?
CH3CH2OH CH3OH
CH3CH2CH2OH - -CH3CH2CH2OH
-water solution of sodium chloride is a good conductor of electricity. due to
this property, table salt is classified as a(n):
weak electrolyte, strong electrolyte, non-electrolyte, or semi-electrolyte - -
strong electrolyte
-example of a weak electrolyte
MgCl2, HC2H3O2, HNO3, or KOH - -HC2H3O2
-in order to prevent the process off either crenation or hemolysis with red
blood cells an intravenous solution concentration should be__________ to the
concentration of blood.
,hypotonic, hypertonic, isotonic, or all of the above. - -isotonic
-the process of crenation occurs when the concentration outside a cell is
______ and is said to be _________.
lower in concentration; hypotonic
higher in concentration; hypertonic
higher in concentration; hypotonic
higher in concentration; hypertonic
none of these - -higher in concentration; hypertonic
-air can be classified to be a solution of several gases. which gas is
considered to be the solvent?
O2, N2, CO2, or H2O - -N2
-arrange the terms solution, suspension, and colloid in order of increasing
size of the dispersed particles (smallest to largest).
solution < suspension < colloid
solution < colloid < suspension
suspension < solution < colloid
colloid < solution < suspension - -solution < colloid < suspension
-identify the type of transport that will occur for the sodium ions that
requires energy for transport
passive diffusion
active transport
facilitated diffusion
all of the above
none of the above - -active transport
-identify the type of transport that will occur for the oxygen molecules that
requires no energy for transport
passive diffusion
active transport
facilitated diffusion
all of the above
none of the above - -none of the above
-predict which will fully dissociate (strong electrolyte) in water
sugar
organic acid pyruvic
, KCl
all
none - -KCl
-in order to prevent the process of either crenation or hemolysis with red
blood cells an intravenous solution concentration should be _______ to the
concentration of blood.
hypotonic
hypertonic
supersonic
isotopic
isotonic - -isotonic
-the glucose transporter provides facilitated transport across the cell
membrane. do you think this transporter is active after you eat a meal and
after you wake up in the morning?
active, active
inactive, inactive
active, inactive
inactive, active - -active, inactive
-example of a nonelectrolyte
MgCl2
CH3COOH / HC2H3O2
sugar C12H22O11
NaOH - -sugar C12H22O11
-calculate mass percent of a solution prepared by dissolving 34.4g NaCl in
298 g of water.
a 10.35%
b 11.51 %
c 0.103 %
d 0.115 %
e none of the above - -a 10.35%
-what is 75% of 375? - -281.3
-percent mass/volume ( % m/v ) of solution that is made from putting 25.0g
of NaCl in 275 mL of water?
a 0.0909% w/v
b 9.09% w/v
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