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36 Cards in this Set
- Front
- Back
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Polar molecules may exhibit....
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1. London Forces
2. Hydrogen Forces 3. dipolar forces |
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True of False:
gas particles move at the highest average felocity? |
True
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True of False:
liquid particles are in a loose, changeable arrangement but do not completely fill the volume of a given container. |
True
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True of False:
Solid particles are in a fixed, rigid arrangement |
True
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True or False:
London forces are also called dispersion forces |
True
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True of False:
London forces are strongly attractive. |
False
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True or False:
London Forces occur between polar and nonpolar molecules. |
True
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Which of the following is not a solid at 0 degrees Celsius?
Salt, Carbon Dioxide, sugar or Iron? |
Carbon Dioxide
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The main reason why carbon tetrabromide is a solid at room temperature when compared to carbon tetrachloride which is a liquid is.....
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Carbon Tetrabromide has a higher molecular weight
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Which of compounds below has a large permanent dipole?
Methan (CH4) hydrogen (H2) Acetone (CH2O) Nitrogen (N2) |
Acetone
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Which of these has the highest melting point?
diamond, iron, sodium, calcium bromide |
Diamond
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Which statement is true about Networks?
A. They have extremely high melting point B. They are covalent substances C. They are large network molecules held by covalent compounds B. All are true? |
ALL ARE TRUE
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Which of the following will have the lowest boiling point?
CH3CH3 CH3CH2OH HOCH2CH2OH CH3OCH3 |
HOCH2CH2OH
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molecules that hydrogen bond must contain...
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at least one of the following...
an N-H bond an O-H bond an H-F bond |
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The forces responsible for holding the DNA molecules in a very long twisted zipper and the effectiveness of the antibiotic vancomycin are...
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Hydrogen bondings
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a gas under an initial pressure of 0.6 atm is compressed at constant Temp. 27 L to 3 L. The final pressure becomes...
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5.4 atm
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380 mm Hg is equal to ......atm?
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0.50
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a gas sample occupies a volume of 8 L at 20 deg. Celsius. The Temp. at which the gas would double its volume is ....
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586 K.
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The volume 2.3 g nitrogen gas at STP is....
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22.4 L
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For an ideal gas, which pairs of the variables below are INVERSELY proportional to each assuming all other variable are kept constant?
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V and P
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which of the following gases will have the same density at STP?
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Carbon monoxide, CO and nitrogen, N2
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How many moles of gas are found in a container that occupies a volume of 5.50 L with a pressure of 0.335 atm at 25 deg. C?
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0.073
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0.123 g of a gas occupy a volume of 124 mL at 120 deg. C and 760 torr. Its molar mass is.....?
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32
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Imagine a balloon and you blow up to a give size (at room temp. and atm. pressure). What do you expect to happen if you pour liquid nitrogen (at 77 K) over the surface of the balloon?
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decrease significantly in size
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which of the following gasses occupy the largest volume at STP?
12 g He 2 mol H20 38 g F2 6.022 x 12^23 molecules NH3 |
12 g He
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which statement is not true about an ideal gas?
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Higher temperature slow down the speed of the molecules
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The statement "like dissovles like" justifies why
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Water, H20 will dissolve ethyl alcohol, CH3CH2OH;
Octane, C8H18 will dissolve methane, CH4 Water, H20 will not dissolve fats C12H26 |
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which end, the polar end or the non polar end, of a detegent molecule is attracted to water
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the polar end
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which of the following statements is correct?
solvent seperation consumes energy. solute seperation consumes energy. solvation releases energy. |
ALL ARE CORRECT
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Under what conditions would a gas be most soluble in a liquid
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low temp and high pressure
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what is the molarity of a 3.68 mL of a solution containing 0.0025 moles of calcium chloride?
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.68 M
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To prepare 100 mL .4 M HCl from a stock solution of 2 M HCl one needs to
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dilute 20 mL 2 M HCl with enough water to make a total volume of 100 mL solution.
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Given 2 moles of each of the following solids which will most effectively decrease the melting point of ice on the road?
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Calcium Bromide, CaBr2
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500 mL 0.4 M aluminum nitrate, Al(NO3)3, solution contain_______ moles of aluminum ions and _______ moles of nitrate ions
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0.2 ; 0.6
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The molarity of a solution that contains 5.85 g NaCl in 2.0 solution is ______
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.050 M
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The % of solution made by dissolving 5 g NaOH in 20 g water is?
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20%
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