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Choose the best answer.
Question 1: 5.0g of an ideal gas occupies 9.2 L at STP. What volume would it occupy at 120°C?
13 L
3 L
130 L
None of These
Question 2: 5.0g of an ideal gas occupies 9.2 L at STP. What volume would it occupy at 0°C and 93 mm Hg?
7.5 L
10 L
75 L
None of These
Question 3: 5.0g of an ideal gas occupies 9.2 L at STP. What is the molecular mass of the substance?
12 g
13 g
78 g
None of These
Question 4: 5.0g of an ideal gas occupies 9.2 L at STP. What volume would it occupy at 120°C and 92 mm Hg?
19 L
109 L
0.42 L
None of These
Question 5: Calculate the volume occupied by 12.0 g of CO
2
gas at 245 mm Hg and -35 °C.
5 L
10 L
15 L
None of These
Question 6: A sample of an ideal gas occupies 1.4 L at 28 cm Hg and 52 degrees C. Calculate the number of moles in the solution.
19 mol
0.019 mol
1.9 mol
None of these
Question 7: An Ideal gas has a volume of 15.0 L at 15°C and 735 mm Hg pressure. At what temperature would it occupy a volume of 30.0 L at 785 mm Hg?
615 K
512 K
128 K
None of these
Question 8: A sample of ideal gas occupies a volume of 238 mL at STP. To what temperature must the sample be heated if it is to occupy a volume of 185 mL at 2.25 atm?
94.3 K
477 K
477°C
None of these
Question 9: Increasing the pressure on a sample of gas increases its temperature, but its volume remains the same. What law best explains this?
Avogadro's Law
Graham's Law
Ideal Gas Law
Avogadro's Interpretation of Guy-Lassac's observations
Question 10: A few minutes after opening a bottle of perfume, the scent permeates the room. What law relates to this phenomenon?
Boyle's Law
Graham's Law
Charles' Law
None of these
Team # 12596
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