SAMPLE PROBLEM WITH ANSWERS

1. Boyle’s Law

2. •1. If a gas at 25.0°C
occupies 3.60 L at a
pressure of 1.00 atm,
what will be it’s volume
at 2.50 atm?

3. •1.44 L or
•1 L

4. •2. A gas has a volume of
69 L at 40ᵒC. What is the
new volume at standard
temperature?

5. •60.18 L or
60 L

6. •3. A gas occupies 1.56 L
at 1.00 atm. What will
be the volume of the gas
if the pressure becomes
3 atm?

7. •.52 L or
1L

8. •4. Calculate the
decrease in
temperature when 2 L
at 20ᵒC is compressed
to 1L?

9. •146.5 K or
147 K

10. •5. A gas occupies 11.2
L at 0.860 atm. What
is the pressure if the
volume becomes 3 L?

11. •3.21 atm or
3 atm

12. •6. 600 mL of air is
at
20ᵒC. What is the
volume at 60 ᵒC?

13. • 681.91 mL
or 682 mL

14. •7. A gas occupies 4.31 L
at a pressure of 0.755
atm. Determine the
volume if the pressure is
increased to 1.25 atm?

15. •2.60 L or 3 L

16. •8. What volume results
if 60 mL of a gas is
cooled from 33ᵒC to
5ᵒC?

17. • 54.51 mL
or 55 mL

18. •9. 635 mL of a gas is at
pressure of 8.00 atm.
What is the volume of
the gas at standard
pressure? ( STP )

19. •5080 mL

20. •10. A 175 mL sample of
neon had it’s pressure
changed from 75.0 kPa
to 1.56 kPa. What is it’s
new volume?

21. •8413.46 mL or
8413 mL

22. •11. Fluorine gas exerts a
pressure of 906 torr.
When the pressure is
changed to 1.50 torr, it’s
volume is 350 mL. What
was the original volume?

23. •0.579 mL or
0.58 mL

24. •12. 83 L of a gas is
at 740 mmHg.
What is it’s
volume at STP?

25. •80.82 L or
81 L

26. • 13. A scuba diver needs a
diving tank in order to provide
breathing gas while he is
underwater. How much
pressure is needed for 6.00
liters of gas at 1.01 atm to be
compressed in a 3.00 liter
cylinder?

27. •2.02 atm or 2
atm

28. •14. A gas occupies 12.3
L at a pressure of 40
mm Hg. What is the
volume when the
pressure is increased to
60 mm Hg?

29. •8.2 L or 8 L

30. • 15. 500 mL of a gas is
collected at 745 torr.
What will the volume
be at standard
pressure?

31. •490.13 mL or
490 mL

32. • 16. When the volume of a
gas is changed from ___ mL
to 852 mL, the
temperature will change
from 315ᵒC to 452ᵒC. What
is the starting volume?

33. •691 mL