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WorksheetsMP4: 4 Wks exam review
Total questions: 16
Worksheet time: 48mins
What is the partial pressure of N2 gas in a mixture of He and N2 if the total pressure is 4,232 mmHg and the partial pressure of He is 4.3 atm?
1.27 atm
4,227.70 atm
-1.27 atm
9.87 atm
At what temperature (in Kelvin) would 8.08 g of H2 gas in a 100,000 mL container exert a pressure of 1.00 atmospheres?
0.0305 K
32.8 K
0.487 K
303.03 K
What is the pressure (in psi) of 4 moles of hydrogen gas in a container with a volume of 4.3L at 31.5°C?
0.42 psi
2.40 psi
23.24 atm
341.63 psi
Batman enjoys balloon animals from the carnival. He just received a balloon giraffe that has an initial temperature of 39.0°C and a volume of 1.28 L. If superman plays a trick on batman, and puts his balloon giraffe into the freezer, what would be the new volume of the balloon if the temperature drops down to 281 K?
1.42 L
3.78 L
6.85 x 10^4 L
1.15 L
A certain gas occupies 6.24 L at pressure of 760 mm Hg. If the pressure is reduced to 60.0 mm Hg, what would the new volume be?
79.0 L
60.0 L
0.493 L
760.0 L
A gas at a volume of 4 liters is at a pressure of 2 atm. The volume is changed to 16,000 mL, what must the new pressure be?
2 atm
10 atm
12 atm
0.5 atm
A container holds three gases: oxygen, carbon dioxide, and helium. The partial pressures of the three gases are 29.4 psi, 3.00 atm, and 3,040 torr, respectively. What is the total pressure inside the container?
2 atm
3 atm
4 atm
9 atm
Observe the balloons A and B above. Both balloons have a temperature of 25.0°C, contain 0.50 moles of gas sealed by the knot at the bottom, and have a volume of 2.2 L.
If balloon A is placed in a freezer with a temperature of -5.50°C, which of the following statements regarding the volumes of the balloons is accurate?
The balloons will remain unchanged and have equal volume at 2.2 L.
Balloon A will be smaller due to fewer moles of gas in the balloon.
Balloon A will be larger due to lower pressure inside the freezer.
Balloon A will be smaller due to the gas particles moving slower.
The volume of a gas is 50.0 mL at 20.0 K. What will be the new temperature if the gas is compressed to 0.01 L under constant pressure?
100 K
10.0 K
4.00 K
5.00 K
Calculate the approximate volume (in mL) of a 1.50 mol sample of gas at 15.0°C and a pressure of 3.75 atm.
9,450 mL
5,930 mL
8.65 L
9.46 L
What is the new pressure of .15 L of a gas that is compressed to 50 mL when the original pressure was 303.9 kPa and the temperature is held constant?
100 atm
0.90 atm
1.0 atm
9.0 atm
If 5.2 g of O2 gas occupies a volume of 2,240 mL at 0°C and a pressure of 1.0 atm, what volume (in L) does 3.5 g of O2 occupy under the same conditions?
[Remember oxygen is a diatomic gas] Explain the following for full credit
1. Name the gas law AND formula
2. Explain any unit conversions (if any)
3. Explain your formula setup and calculations
4. State your final answer with proper units
Three gases, Ar, N2 and H2 are mixed in a 500L container. Ar has a pressure of 255 torr, N2 has a pressure of 228 torr and H2 has pressure of 0.99 atm. What is the total pressure in the container?
0.64 atm
0.36 atm
1.63 atm
If 3.25 mol of Ar occupies 100. L at a particular temp and pressure, what volume does 14.15 mol of Ar occupy under same condition?
435 L
225 L
100 L
522 L
Charles' law says that if a certain quantity of gas is held at constant pressure, then its volume is directly proportional to the absolute temperature. Which of the following does this law help explain? Select TWO correct answers.
Some gases only react at high temperatures.
A basketball outside will shrink some as the temperature goes down.
A gas-filled balloon expands upon heating.
Solids require high heat in order to change into gases.
The pressure of a gas increases when volume decreases.
A bottle has a volume of 10 liters containing 20 moles of air. If 2.3 moles of air is added at 273K and 2 atm to the bottle. What is the new volume of the football under the same conditions?
11.15 liters
20.2 liters
30.4 liters
19.5 liters
