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Chap 6 inorganic Chemistry
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Gravity
Terms in this set (36)
Consider a gas in a sealed, rigid container. Which of the following will increase if the temperature of the gas is increased?
The pressure of the gas
the collision force of the gas particles
the speed of the gas particles
the kinetic energy of the gas particles
Consider a gas in a sealed, rigid container. Which of the following will increase if more gas is pumped into the container at constant temperature?
the collision frequency of the gas particles
the number of gas particles
the pressure of the gas
An oxygen tank contains oxygen (O2) at a pressure of 9.00atm .
What is the pressure in the tank in torr?
6840
torr
An oxygen tank contains oxygen (O2) at a pressure of 9.00atm .
What is the pressure in the tank in mmHg?
6840
mmHg
A very flexible helium-filled balloon is released from the ground into the air at 20. ∘C. The initial volume of the balloon is 5.00 L, and the pressure is 760. mmHg. The balloon ascends to an altitude of 20 km, where the pressure is 76.0 mmHg and the temperature is −50. ∘C. What is the new volume, V2, of the balloon in liters, assuming it doesn't break or leak?
38.1 L
Consider 4.80L of a gas at 365 mmHg and 20. ∘C . If the container is compressed to 2.40L and the temperature is increased to 30.∘C , what is the new pressure, P2, inside the container? Assume no change in the amount of gas inside the cylinder.
755 mmHg
A cylinder, with a piston pressing down with a constant pressure, is filled with 1.90moles of a gas (n1), and its volume is 45.0L (V1). If 0.500mole of gas leak out, and the pressure and temperature remain the same, what is the final volume of the gas inside the cylinder?
33.2 L
A sample of gas in a cylinder as in the example in Part A has an initial volume of 70.0L , and you have determined that it contains 1.10moles of gas. The next day you notice that some of the gas has leaked out. The pressure and temperature remain the same, but the volume has changed to 17.5L . How many moles of gas (n2) remain in the cylinder?
0.275 mole
A sample of methane (CH4) has a volume of 30mL at a pressure of 0.85atm . What is the volume, in milliliters, of the gas at each of the following pressures if there is no change in temperature and amount of gas?
0.20atm
Express your answer using three significant figures.
128
mL
A sample of methane (CH4) has a volume of 30mL at a pressure of 0.85atm . What is the volume, in milliliters, of the gas at each of the following pressures if there is no change in temperature and amount of gas?
2.30atm
Express your answer using three significant figures.
11.1
mL
A sample of methane (CH4) has a volume of 30mL at a pressure of 0.85atm . What is the volume, in milliliters, of the gas at each of the following pressures if there is no change in temperature and amount of gas?
3200mmHg
Express your answer using three significant figures.
6.06
mL
The volume of air in a person's lungs is 644mL at a pressure of 751mmHg . Inhalation occurs as the pressure in the lungs drops to 740mmHg with no change in temperature and amount of gas.
To what volume, in milliliters, did the lungs expand?
654
mL
А sample of neon initially has a volume of 3.00L at 14∘C .
What is the new temperature, in degrees Celsius, when the volume of the sample is changed at constant pressure and amount of gas to 6.00L ?
301 ∘C
А sample of neon initially has a volume of 3.00L at 14∘C .
What is the new temperature, in degrees Celsius, when the volume of the sample is changed at constant pressure and amount of gas to 1300mL ?
-149 ∘C
А sample of neon initially has a volume of 3.00L at 14∘C .
What is the new temperature, in degrees Celsius, when the volume of the sample is changed at constant pressure and amount of gas to 6.50L ?
349 ∘C
А sample of neon initially has a volume of 3.00L at 14∘C .
What is the new temperature, in degrees Celsius, when the volume of the sample is changed at constant pressure and amount of gas to 3700mL ?
81.0 ∘C
A balloon contains 2500mL of helium gas at 95∘C. What is the new volume of the gas when the temperature changes to the following, if n (the amount of gas) and P are not changed?
40∘C
2130
mL
A balloon contains 2500mL of helium gas at 95∘C. What is the new volume of the gas when the temperature changes to the following, if n (the amount of gas) and P are not changed?
650K
4420
mL
A balloon contains 2500mL of helium gas at 95∘C. What is the new volume of the gas when the temperature changes to the following, if n (the amount of gas) and P are not changed?
-20∘C
1720
mL
A balloon contains 2500mL of helium gas at 95∘C. What is the new volume of the gas when the temperature changes to the following, if n (the amount of gas) and P are not changed?
240K
1630
mL
Solve for the new pressure, in atm, for each of the following, if n and V are constant:
A gas with an initial pressure of 1.1atm at 77∘C is cooled to -43∘C.
0.72 atm
Solve for the new pressure, in atm, for each of the following, if n and V are constant:
A sample of N2 with an initial pressure of 720mmHg at -63∘C is heated to 35∘C.
1.4 atm
A scuba diver 40ft below the ocean surface inhales 90.0mL of compressed air from a scuba tank at a pressure of 2.80atm and a temperature of 5∘C.
What is the pressure of the air, in atm, in the lungs when the gas expands to 190.0mL at a body temperature of 37∘C, and the amount of gas remains constant?
1.48
atm
A 100mL bubble of hot gases at 240∘C and 1.80atm is emitted from an active volcano.
What is the new volume, in milliliters, of the bubble outside the volcano where the temperature is -16∘C and the pressure is 0.62atm , if the amount of gas remains the same?
145
mL
A sample of argon gas has a volume of 705mL at a pressure of 1.40atm and a temperature of 134∘C.
What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 682mmHg and 281K , if the amount of gas remains the same?
759
mL
A sample of argon gas has a volume of 705mL at a pressure of 1.40atm and a temperature of 134∘C.
What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 0.850atm and 90∘C, if the amount of gas remains the same?
1040
mL
A sample of argon gas has a volume of 705mL at a pressure of 1.40atm and a temperature of 134∘C.
What is the volume of the gas in milliliters when the pressure and temperature of the gas sample are changed to 16.8atm and -11∘C, if the amount of gas remains the same?
37.8
mL
A sample containing 4.00g of O2 gas has a volume of 21.0L at constant pressure and temperature. What is the new volume, in liters, after 0.750mole of O2 gas is added to the initial sample 4.00g of O2
147
L
A sample containing 4.00g of O2 gas has a volume of 21.0L at constant pressure and temperature. If oxygen is released until the volume is 12.0L how many moles of O2 are removed?
5.36×10−2
A sample containing 4.00g of O2 gas has a volume of 21.0L at constant pressure and temperature. What is the volume, in liters, after 4.50g of He is added to the O2 gas in the container?
210 L
Use the molar volume to solve each of the following at STP.
The number of moles of O2 in 44.0L of O2 gas.
1.96
mol
The number of moles of CO2 in 4.80L of CO2 gas .
0.214
mol
Use the molar volume to find the volume, in liters, of 6.30g of O2 at STP.
Express your answer to three significant figures and include the appropriate units.
4.41 L
se the molar volume to find the volume, in milliliters, occupied by 60g of neon at STP.
Express your answer to two significant figures and include the appropriate units.
6.7×10E4 mL
In a gas mixture, the partial pressures are nitrogen 440torr , oxygen 145torr , and helium 235torr .
What is the total pressure (torr) exerted by the gas mixture?
820
torr
A gas mixture containing oxygen, nitrogen, and neon exerts a total pressure of 1.32atm
If helium added to the mixture increases the pressure to 1.90atm , what is the partial pressure (atm) of the helium?
0.580
atm
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