Mini Gas Laws
A balloon contains 10.0 L of helium gas at a pressure of 1.00 atm. If the pressure is increased to 1.08 atm while keeping the temperature constant, what will the new volume of the balloon be?
(1.00 atm) (10.0 L) = (1.08 atm) (V2)
9.26 L
A gas occupies a volume of 125 mL at a temperature of 298 K. If the temperature is increased to 350 K while the pressure remains constant, what will the new volume of the gas be?
(125 mL) / (298K) = (V2) (350K)
147 mL
A container holds 5.00 L of oxygen gas at a pressure of 2.00 atm and a temperature of 305 K. If the volume of the container is increased to 7.50 L and the temperature is increased to 355 K, what will the new pressure of the gas be in atm?
(2) (5) / (305) = (P2) (7.5) / (355)
1.55 atm
Three gases, helium (He), neon (Ne), and argon (Ar), are mixed in a 10.0 L container at a constant temperature of 30℃. The partial pressure of helium is 0.85 atm, the partial pressure of neon is 0.62 atm, and the partial pressure of argon is 0.33 atm. What is the total pressure of the gas mixture in the container?
.85 + .62 + .33 =
1.80 atm (SFs)
What does “zàijiàn” mean in Chinese?
Goodbye!
A gas occupies a volume of 180 L at a temperature of 298 K. If the volume increases to 235 mL, while the pressure remains constant, what will the new temperature be?
(180 L) / (298K) = (235) / (T2)
389 K
A container holds 0.550 mol of oxygen gas and has a volume of 11.2 L. If an additional 0.250 mol of oxygen is added to the container under the same temperature and pressure, what will the new volume be?
(11.2 L) / (0.550 mol) = V2 / (0.800 mol)
16.3 L
An ideal gas has a pressure of 4.0 atm, volume of 2.0 L, and a temperature of 320 K. How many moles does the gas have?
(4) (2) = (n) (0.08026) (320)
0.30 mole
Who sings the song “Under Pressure” with the rock band Queen?
David Bowie
KO is the stock symbol for which publicly traded company?
Coca-cola
A gas occupies a volume of 0.125 L at a pressure of 1.97 atm. If the volume is increased to be five times its original size, at a constant temperature, what will the new pressure of the gas be?
(V) (1.97 atm) = (5V) (P2)
0.394 atm
A balloon contains 3.8 L of air at a temperature of 23℃. If the balloon is placed in a freezer and its temperature drops to -17℃, what will the new volume of the air inside the balloon be, assuming constant pressure?
23℃ → 296.15 K
-17℃ → 256.15 K
(3.8L) / (296.15 K) = (V2) / (256.15 K)
3.3 L
An ideal gas has a pressure of 4.5 atm, volume of 24.0 L, and 4.7 moles. What is its temperature in celsius?
(4.5) (24) = (4.7) (0.08206) T
T = 280.0 K
6.9℃
Suppose that 0.75 mol of nitrogen gas (N₂) and 1.25 mol of oxygen gas (O₂) are confined in a 5.00 L container at a temperature of 50.0℃. What is the total pressure of the gas mixture in the container?
P (5) = (2) (0.08206) (323.15)
10.6 atm
Who was the 27th president of the United States?
William Howard Taft
A balloon filled with helium gas has a volume of 8.50 L and contains 0.38 mol of helium. If 0.16 mol of helium leaks out of the balloon but the rest remains inside, what will the new volume of the balloon be, assuming constant temperature and pressure?
(8.50 L) / (0.38 mol) = (V2) / (0.22 mol)
4.9 L
A container of argon gas has a volume of 3500 L at a pressure of 1.48 atm. If the pressure is increased by 2.00 atm, without changing the temperature, what is the new volume of the gas?
(1.48 atm) (3500L) = (3.48 atm) (V2)
1500 L
A container holds 6.78 L of oxygen gas at a pressure of 3.45 atm and a temperature of 33.3℃. If the volume of the container is increased to 7.89 L and the pressure decreases to 1.23 atm, what will the new temperature of the gas be (in celsius)?
33.3℃ → 306.45 K
(3.45) (6.78) / (306.45) = (1.23) (7.89) / T
T = 127.14 K
127.11 K → -146℃
Suppose that 0.75 mol of nitrogen gas (N₂) and 1.25 mol of oxygen gas (O₂) are confined in a 5.00 L container at a temperature of 50.0℃. What is the partial pressure of the N2 gas?
P (5) = (0.75) (0.08206) (323.15)
3.98 atm
Which teacher is our neighbor? (in Room 6103)
Ms. Anaya
A balloon contains 2.7 L of air at a temperature of 17℃. If the balloon is placed in a jacuzzi and its volume increases to be 3.2L, assuming constant pressure, what is the new temperature of the balloon in celsius?
17℃ → 290.15 K
(2.7 L) / (290.15 K) = (3.2 L) / (T2)
T2 = 343.88 K
343.88K → 71℃
A container holds 0.600 mol of oxygen gas and has a volume of 11.2 L. The volume then increases to 43.7 L, under the same temperature and pressure, how many moles of oxygen gas was added?
(11.2 L) / (0.600 mol) = (43.7 L) (n2)
n2 = 2.34
2.34 - 0.60 = 1.74 moles added
An ideal gas has a pressure of 1.03 atm, 9.80 x 1023 particles (remember a mole is 6.022 x 1023 particles) and a temperature of 38℃. What volume does it occupy?
P = 1.03 atm, n = 1.627 moles, T = 311.15 K
(1.03) (V) = (1.627) (0.08206) (311.15)
40.3 L
A 12.0 L container is filled by mixing three gases at a constant temperature of 25℃. The gases were initially in separate containers: 6.0 L of methane (CH4) at a pressure of 0.80 atm, 4.0 L of nitrogen (N2) at a pressure of 1.50 atm, and 2.0 L of argon (Ar) at a pressure of 0.90 atm. What is the total pressure of the resulting gas mixture in the 12.0 L container?
Methane: 0.40 atm
Nitrogen: 0.50 atm
Argon: 0.15 atm
1.05 atm
Which West High teachers won the corn hole competition this year?
Ms. Burke and Mr. Phelps