Chem Problems_5 - CHAPTER 5 Set 1 4 Which of the following...

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Chem Problems_5

4 .   Which of the following statements is false ?
a ) Condensed states have much higher densities than gases .
b ) Molecules are very far apart in gases and closer together in liquids and solids .
c ) Gases completely fill any container they occupy and are easily compressed .
d ) Vapor refers to a gas formed by evaporation of a liquid or sublimation of a solid .
e ) Solid water ( ice ) , unlike most substances , is more dense than it s liquid form ( water )
5 .   The statement “ At constant temperature , the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure . ” is a statement of __________ Law .
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6 .   A sample of a gas occupies 1600 milliliters at 20.0 0 C and 600 torr . What volume will it occupy at the same temperature and 800 torr ?
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7 .   A sample of oxygen occupies 47.2 liters under a pressure of 1240 torr at 25 0 C. What volume would it occupy at 25 0 C if the pressure were decreased to 730 torr ?
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8 .   The volume of a sample of a gas is 405 mL at 10.0 atm and 467 K. What volume will it occupy at 4.29 atm and the same temperature ?
a ) 17.4 L
b) 189 mL
c) 174 m L
d) 1047 mL
e ) 944 m L
9 .   The volume of a sample of a gas is 415 mL at 10.0 atm and 337 K. What volume will it occupy at 5.32 atm and 337 K ?
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10 .   A 5.00 - L sample of a gas exerts a pressure of 1040 torr at 50.0 0
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11 .   A sample of carbon monoxide , CO , occupies a volume of 350 mL and exerts a pressure of 1020 torr at 25 0 C. If the volume expands to 500 mL with no temperature change , what pressure will the gas exert ?
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12 .   A gas occupies 1.75 liters and exerts a pressure of 730 torr at a certain temperature . If the temperature remains constant , what volume must it occupy to exert a pressure of 820 torr ?
a ) 0.641 L
b) 1.56 L
c) 3.44 L
d) 0.291 L
e) 1.08 L
 1.56 L
Answer:     1.56 L
13 .   A sample of oxygen occupies 47.2 liters under a pressure of 1240 torr at 25 0 C. By what percent does the volume of this sample change if the pressure were decreased to 730 torr at 25 0 C ?
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14 .   The statement “ At constant pressure , the volume occupied by a definite mass of a gas is directly proportional to the absolute temperature . ” is a statement of___________ Law.
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15 .   A sample of nitrogen occupies 5.50 liters under a pressure of 900 torr at 25.0 0 C. At what temperature will it occupy 10.0 liters at the same pressure ?
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16 .   A given mass of xenon gas has a volume of 200 m L at 25.0 0 C and 760 torr . To what temperature must the xenon be heated to occupy 450 m L at 760
a torr ?
a ) 376 0 C
b ) 398 0 C
c) 416 0 C
d) 512 0 C
e) 492 0 C
17 .   A 300 m L sample of neon is confined under a pressure of 0.420 atm at 15.0 0
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18 .   A sample of a gas occupies 460 mL at 70.0 0 C and 1.00 atmosphere . At what temperature would the gas occupy 650 m L at the same pressure ?
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19 .   The volume of a sample of a gas is 405 mL at 10.0 atm and 467 K. What volume will the sample occupy at 10.0 atm and 1025 K ? a ) 644 m L b) 889 m L c) 405 mL d) 434 m L e) 185 m L 20 . The temperature of a fixed amount of hydrogen gas is reduced from 20 0 C to - 20 0 C at constant pressure . If the original volume of gas is 420 mL , what is the final volume ?
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20 .   The temperature of a fixed amount of hydrogen gas is reduced from 20 0 C to -20 0 C at constant pressure . If the original volume of gas is 420 mL , what is the final volume ?
a ) 466 mL
b ) 257 mL
c ) 363 ml
d ) 406 mL
e ) 392 mL
Answer:  c )   363 ml
21 .   Suppose you inhaled 1.00 liter of air at - 30.0 0 C ( - 22 0 F ) , and held this air long enough to heat it to body temperature , 37.0 0 C. What would be the new volume of the air in the lungs assuming constant pressure ?
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22 .   By international agreement the standard temperature and pressure ( STP ) for gases is
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23 .   A sample of helium occupies 5.00 L at STP . What volume will the sample occupy at 0.0 0 C and 890 torr ?
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24 .   A sample of neon , Ne , occupies 1700 mL at STP . At constant pressure , what temperature is necessary to increase the volume to 2100 mL ?
a ) - 14 0 C
b) - 52 0 C
c) 32 0 C
d) 52 0 C
e) 64 0 C
25 .   A sample of gas occupies 650 m L at STP . If the pressure remains constant , what volume will it occupy at a temperature of 65.0 0 C ?
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26 .   A gaseous sample occupies 1.00 liter at 120 0 C and 1.00 atm . What volume will it occupy at STP ?
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27 .   A sample of nitrogen occupies a volume of 546 m L at STP . What volume would the nitrogen occupy at 1770 C under a pressure of 380 torr ?
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28 .   A sample of nitrogen occupies a volume of 300 mL under a pressure of 380 torr at - 177 0
 C. What volume
 would the gas occupy at STP ? a ) 9 l m L b ) 1.8 x 10 2 m L c)
 3.6 x 10 2 m L d) 4.3
 x 10 2 m L
29 .   A sample of a gas occupies 3.24 liters at 25.0 0 C and 734 torr . What volume does it occupy at STP ?
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30 .   A sample of neon occupies 4.50 liters at 30.0 0 C and 2.50 atmospheres . What volume does the sample occupy at standard conditions ? a ) 6.42 L b) 5.36 L c) 12.5 L d) 2.00 L e) 10.1 L 31 . A sample of nitrogen occupies 200 mL at 27 0 C when the pressure is 0.500 atm . What volume would it occupy at standard conditions ? a ) 9 l m L b ) 110 m L c) 127 m L d) 135 m L 32 . The volume of a sample of nitrogen is 6.00 liters at 35 0 C and 740 torr . What volume will it occupy at STP ?
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31 .   A sample of nitrogen occupies 200 mL at 27 0 C when the pressure is 0.500 atm . What volume would it occupy at standard conditions ?
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32 .   The volume of a sample of nitrogen is 6.00 liters at 35 0 C and 740 torr . What volume will it occupy at STP ?
a ) 6.59 L
b ) 5.46 L
c ) 6.95 L
d ) 5.46 L
e ) 5.18 L
Answer:  e )   5.18 L
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Chapter 6 / Exercise 6.19
Chemistry for Today: General, Organic, and Biochemistry
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a7575718fb81063e3083597b8feff66aa8ea7be0.docxCHAPTER 5 Set 14. Which of the following statements is false?a)Condensed states have much higher densities than gases.b)Molecules are very far apart in gases and closer together in liquids and solids.c)Gases completely fill any container they occupy and are easily compressed.d)Vapor refers to a gas formed by evaporation of a liquid or sublimation of a solid.e)Solid water (ice), unlike most substances, is more dense than its liquid form (water)
5. The statement “At constant temperature, the volume occupied by a definite mass of a gas is inversely proportional to the applied pressure.” is a statement of __________Law.
6. A sample of a gas occupies 1600 milliliters at 20.00C and 600 torr. What volume will it occupy at the same temperature and 800 torr?
3 mL 7. A sample of oxygen occupies 47.2 liters under a pressure of 1240 torr at 250C. What volume would itoccupy at 250C if the pressure were decreased to 730 torr?
L8. The volume of a sample of a gas is 405 mL at 10.0 atm and 467 K. What volume will it occupy at 4.29 atmand the same temperature? a) 17.4 L b) 189 mL c) 174 mL d) 1047 mL e) 944 mL
9. The volume of a sample of a gas is 415 mL at 10.0 atm and 337 K. What volume will it occupy at 5.32 atmand 337 K?
mL10. A 5.00-L sample of a gas exerts a pressure of 1040 torr at 50.00C. In what volume would the same sampleexert a pressure of 1.00 atm at 50.00C?
11. A sample of carbon monoxide, CO, occupies a volume of 350 mL and exerts a pressure of 1020 torr at250C. If the volume expands to 500 mL with no temperature change, what pressure will the gas exert?
12. A gas occupies 1.75 liters and exerts a pressure of 730 torr at a certain temperature. If the temperatureremains constant, what volume must it occupy to exert a pressure of 820 torr?a) 0.641 L b) 1.56 L c) 3.44 L d) 0.291 L e) 1.08 L
13. A sample of oxygen occupies 47.2 liters under a pressure of 1240 torr at 250C. By what percent does thevolume of this sample change if the pressure were decreased to 730 torr at 250C?
14. The statement “At constant pressure, the volume occupied by a definite mass of a gas is directly proportional to the absolute temperature.” is a statement of___________Law.
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Chemistry for Today: General, Organic, and Biochemistry
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Chapter 6 / Exercise 6.19
Chemistry for Today: General, Organic, and Biochemistry
Seager/Slabaugh
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