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Suppose a sample of gas is composed of 100 molecules, with speeds given below.Speed ...

Suppose a sample of gas is composed of 100 molecules, with speeds given below.Speed ...

[html]Suppose a sample of gas is composed of 100 molecules, with speeds given below.Speed (m/s)Number200

Chemistry   becky28   3   Deeclaire   4 days ago

Select the gas with the largest root-mean-square molecular speed at 25C.

Select the gas with the largest root-mean-square molecular speed at 25C.

Select the gas with the largest root-mean-square molecular speed at 25°C.

▸ NH3

▸ CO

▸ H2

▸ SF6

▸ All the gases have the same root-mean-square molecular speed at 25°C.

Chemistry   steveberrings   5   david200095367   4 days ago

Select the gas with the highest average kinetic energy per mole at 298 K.

Select the gas with the highest average kinetic energy per mole at 298 K.

Select the gas with the highest average kinetic energy per mole at 298 K.

▸ O2

▸ CO2

▸ H2O

▸ H2

▸ All of these have the same average kinetic energy.

Chemistry   duo21   8   Codybarnes   4 days ago

Nitrogen will behave most like an ideal gas

Nitrogen will behave most like an ideal gas

Nitrogen will behave most like an ideal gas

▸ at high temperature and high pressure.

▸ at high temperature and low pressure.

▸ at low temperature and high pressure.

▸ at low temperature and low pressure.

▸ at intermediate (moderate) temperature and pressure.

Chemistry   unrendezvous   9   malgrextout   4 days ago

Magnesium metal (0.100 mol) and hydrochloric acid (0.500 mol HCl) are combined and react to ...

Magnesium metal (0.100 mol) and hydrochloric acid (0.500 mol HCl) are combined and react to ...

[html]Magnesium metal (0.100 mol) and hydrochloric acid (0.500 mol HCl) are combined and react to completion. What volume of hydrogen gas, measured at STP, is produced?Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)(R = 0.08206 L • atm/K • mol)

▸ 2.24 L of H2

▸ 4.48 L of H2

▸ 5.60 L of H

Chemistry   tmason   8   cskeen80   4 days ago

In the van der Waals equation, the constant b is a constant that is part of a correction factor for

In the van der Waals equation, the constant b is a constant that is part of a correction factor for

In the van der Waals equation, the constant b is a constant that is part of a correction factor for

▸ the volume of the gas.

▸ the temperature of the gas.

▸ the pressure of the gas.

▸ the ideal gas constant.

Chemistry   bennick   9   GlitterBug11   4 days ago

In the van der Waals equation, the constant a is a constant that is part of a correction factor for

In the van der Waals equation, the constant a is a constant that is part of a correction factor for

In the van der Waals equation, the constant a is a constant that is part of a correction factor for

▸ the volume of the gas.

▸ the temperature of the gas.

▸ the pressure of the gas.

▸ the ideal gas constant.

Chemistry   apple321   8   aliwchamoun   4 days ago

If the atmospheric pressure in Denver is 0.8800 atm, what is this pressure expressed in mmHg? (1 atm ...

If the atmospheric pressure in Denver is 0.8800 atm, what is this pressure expressed in mmHg? (1 atm ...

If the atmospheric pressure in Denver is 0.8800 atm, what is this pressure expressed in mmHg? (1 atm = 101,325 Pa = 760 torr, 1 torr = 1 mmHg)?

▸ 151.5 mmHg

▸ 1.16 × 10–3 mmHg

▸ 863.6 mmHg

▸ 8.92 × 104 mmHg

▸ 668.8 mmHg

Chemistry   ellie425   6   Marinaanderson0   4 days ago

If equal masses of O2( g) and HBr( g) are in separate containers of equal volume and temperature, ...

If equal masses of O2( g) and HBr( g) are in separate containers of equal volume and temperature, ...

[html]If equal masses of O2( g) and HBr( g) are in separate containers of equal volume and temperature, which one of the following statements is true?

▸ The pressure in the O2 container is less than that in the HBr container.

▸ The pressure in the O2 container is greater than that in the HBr container.

▸ The average velocity of

Chemistry   edelynpl   6   latoya86   4 days ago

If a fixed amount of a gas is at a pressure of 2.71 atm and has a volume of 85.3 L at a temperature ...

If a fixed amount of a gas is at a pressure of 2.71 atm and has a volume of 85.3 L at a temperature ...

If a fixed amount of a gas is at a pressure of 2.71 atm and has a volume of 85.3 L at a temperature of 173.4 K, what is the final temperature of the gas if the pressure changes to 1.04 atm in a 105.3 L container?

▸ 49.8 K

▸ 75.9 K

▸ 366.0 K

▸ 82.1 K

▸ 557.8 K

Chemistry   misserz0210   8   johnmilton   4 days ago

If 25.5 L of oxygen are cooled from 150C to 50C at constant pressure, what is the new volume of oxygen?

If 25.5 L of oxygen are cooled from 150C to 50C at constant pressure, what is the new volume of oxygen?

If 25.5 L of oxygen are cooled from 150°C to 50°C at constant pressure, what is the new volume of oxygen?

▸ 0.0514 L

▸ 19.5 L

▸ 33.4 L

▸ 0.03 L

▸ 3.5 L

Chemistry   FallenOne   8   twogat123   4 days ago

If 2.38 mol of a gas has a volume of 120.0 mL, what is the volume of 1.97 mol of the gas at the same ...

If 2.38 mol of a gas has a volume of 120.0 mL, what is the volume of 1.97 mol of the gas at the same ...

If 2.38 mol of a gas has a volume of 120.0 mL, what is the volume of 1.97 mol of the gas at the same temperature and pressure?

▸ 25.6 mL

▸ 99.3 mL

▸ 119 mL

▸ 145 mL

▸ 563 mL

Chemistry   anthonyaooo   6   ssong07   4 days ago

If 2.3 mol of a gas occupies 50.5 mL, how many moles of the gas will occupy 85.5 mL at the same ...

If 2.3 mol of a gas occupies 50.5 mL, how many moles of the gas will occupy 85.5 mL at the same ...

If 2.3 mol of a gas occupies 50.5 mL, how many moles of the gas will occupy 85.5 mL at the same temperature and pressure?

▸ 1.4 mol

▸ 0.59 mol

▸ 3.9 mol

▸ 0.26 mol

▸ 2.3 mol

Chemistry   anthonyaooo   6   naj2008h   4 days ago

How many molecules of N2 gas are present in a 2.5-L flask at 50C and 650 mmHg? (R = 0.08206 L atm/K ...

How many molecules of N2 gas are present in a 2.5-L flask at 50C and 650 mmHg? (R = 0.08206 L atm/K ...

[html]How many molecules of N2 gas are present in a 2.5-L flask at 50°C and 650 mmHg? (R = 0.08206 L • atm/K • mol, 1 atm = 760 mmHg, 1 mole = 6.022 × 1023 molecules)

▸ 2.1 × 10–23 molecules

▸ 4.9 × 1022 molecules

▸ 3.1 × 1023 molecules

▸ 3.6 × 1025 molecules

▸ 0.0

Chemistry   mlee52381   6   Kocojda   4 days ago

Gases are sold in large cylinders for laboratory use. What pressure is exerted by 2.500 kg of oxygen ...

Gases are sold in large cylinders for laboratory use. What pressure is exerted by 2.500 kg of oxygen ...

Gases are sold in large cylinders for laboratory use. What pressure is exerted by 2.500 kg of oxygen gas (O2) stored at 22°C in a 40.0-L cylinder?(R = 0.08206 L • atm/K • mol)

▸ 3.55 atm

▸ 1.51 ×103 atm

▸ 47.3 atm

▸ 7.56 × 104 atm

▸ 10.2 atm

Chemistry   annyan   6   dmahr   4 days ago

Freon-12, CF2Cl2, which has been widely used in air conditioning systems, is considered a threat to ...

Freon-12, CF2Cl2, which has been widely used in air conditioning systems, is considered a threat to ...

Freon-12, CF2Cl2, which has been widely used in air conditioning systems, is considered a threat to the ozone layer in the stratosphere. Calculate the root-mean-square velocity of Freon-12 molecules in the lower stratosphere where the temperature is –65°C.

▸ 20 m/s

▸ 120 m/s

▸ 207 m/s

▸ 260 m/s

▸ 4.4 × 104 m/s

Chemistry   inkster   7   julie5   4 days ago

For a substance that remains a gas under the conditions listed, deviation from the ideal gas law ...

For a substance that remains a gas under the conditions listed, deviation from the ideal gas law ...

For a substance that remains a gas under the conditions listed, deviation from the ideal gas law would be most pronounced at

▸ 100°C and 2.0 atm.

▸ 0°C and 2.0 atm.

▸ –100°C and 2.0 atm.

▸ –100°C and 4.0 atm.

▸ 100°C and 4.0 atm.

Chemistry   lcard044   6   nguyenphuc1990   4 days ago

Deviations from the ideal gas law are greater at

Deviations from the ideal gas law are greater at

Deviations from the ideal gas law are greater at

▸ low temperatures and low pressures.

▸ low temperatures and high pressures.

▸ high temperatures and high pressures.

▸ high temperatures and low pressures.

Chemistry   adnan_buljic   6   sz   4 days ago

Determine the molar mass of Freon-11 gas if a sample weighing 0.597 g occupies 100 cm3 at 95C and ...

Determine the molar mass of Freon-11 gas if a sample weighing 0.597 g occupies 100 cm3 at 95C and ...

Determine the molar mass of Freon-11 gas if a sample weighing 0.597 g occupies 100 cm3 at 95°C  and 1000 mmHg ( R = 0.08206 L • atm/K • mol, 1 atm = 760 mmHg).

▸ 0.19 g/mol

▸ 35.3 g/mol

▸ 70.9 g/mol

▸ 137 g/mol

▸ 384 g/mol

Chemistry   Student06   8   snowcat012   4 days ago

Calculate the volume of H2(g) at 273 K and 2.00 atm that will be formed when 275 mL of 0.725 M HCl ...

Calculate the volume of H2(g) at 273 K and 2.00 atm that will be formed when 275 mL of 0.725 M HCl ...

Calculate the volume of H2(g) at 273 K and 2.00 atm that will be formed when 275 mL of 0.725 M HCl solution reacts with 50.0 g Zn(s) to give hydrogen gas and aqueous zinc chloride.(R = 0.08206 L • atm/K • mol)

▸ 0.56 L

▸ 1.12 L

▸ 2.23 L

▸ 4.47 L

▸ 3.54 L

Chemistry   melisooflyy   6   johnmilton   4 days ago

Calculate the root-mean-square speed of methane, CH4(g), at 78C.

Calculate the root-mean-square speed of methane, CH4(g), at 78C.

Calculate the root-mean-square speed of methane, CH4(g), at 78°C.

▸ 23 m/s

▸ 350 m/s

▸ 550 m/s

▸ 667 m/s

▸ 739 m/s

Chemistry   tw1gg   7   kinnigit   4 days ago

At what temperature is the root mean square speed of helium gas equal to that of oxygen gas at 300. K?

At what temperature is the root mean square speed of helium gas equal to that of oxygen gas at 300. K?

At what temperature is the root mean square speed of helium gas equal to that of oxygen gas at 300. K?

▸ 37.5 K

▸ 75 K

▸ 106 K

▸ 292 K

▸ 2400. K

Chemistry   mariasmakatof   9   flash33101   4 days ago

At very high pressures (~1000 atm), the measured pressure exerted by real gases is greater than that ...

At very high pressures (~1000 atm), the measured pressure exerted by real gases is greater than that ...

[html]At very high pressures (~1000 atm), the measured pressure exerted by real gases is greater than that predicted by the ideal gas equation. This is mainly because

▸ such high pressures cannot be accurately measured.

▸ real gases will condense to form liquids at 1000 atm pressure.

▸ gas phase collisions prevent molecules from colliding with the walls of the container.

Chemistry   thallium81   7   kitty123   4 days ago

Assuming ideal behavior, what is the density of argon gas at STP?(R = 0.08206 L atm/K mol)

Assuming ideal behavior, what is the density of argon gas at STP?(R = 0.08206 L atm/K mol)

Assuming ideal behavior, what is the density of argon gas at STP?(R = 0.08206 L • atm/K • mol)

▸ 0.0176 g/L

▸ 0.0250 g/L

▸ 0.0561 g/L

▸ 1.78 g/L

▸ 181 g/L

Chemistry   mombefor78   6   romeo_izzy13   4 days ago

Arrange the following gases in order of increasing rate of effusion: C2H6, Ar, HCl, and PH3.

Arrange the following gases in order of increasing rate of effusion: C2H6, Ar, HCl, and PH3.

[html]Arrange the following gases in order of increasing rate of effusion: C2H6, Ar, HCl, and PH3.

▸ Ar < HCl

Chemistry   Cell6   6   shichihenge7   4 days ago

A spacecraft is filled with 0.500 atm of N2 and 0.500 atm of O2. Suppose an object strikes this ...

A spacecraft is filled with 0.500 atm of N2 and 0.500 atm of O2. Suppose an object strikes this ...

[html]A spacecraft is filled with 0.500 atm of N2 and 0.500 atm of O2. Suppose an object strikes this spacecraft and puts a very small hole in its side. Under these circumstances,

▸ O2 is lost from the craft 6.9% faster than N2 is lost.

▸ O2 is lost from the craft 14% faster than N2 is lost.

▸

Chemistry   punkybrewster   6   frithne   4 days ago

A sample of propane, a component of LP gas, has a volume of 35.3 L at 315 K and 922 torr. What is ...

A sample of propane, a component of LP gas, has a volume of 35.3 L at 315 K and 922 torr. What is ...

A sample of propane, a component of LP gas, has a volume of 35.3 L at 315 K and 922 torr. What is its volume at STP?(R = 0.08206 L • atm/K • mol, 1 atm = 760 torr)

▸ 25.2 L

▸ 30.6 L

▸ 33.6 L

▸ 37.1 L

▸ 49.2 L

Chemistry   nancy2457   6   traumajeff   4 days ago

A sample of nitrogen gas is confined to a 14.0-L container at 375 torr and 37.0C. How many moles of ...

A sample of nitrogen gas is confined to a 14.0-L container at 375 torr and 37.0C. How many moles of ...

A sample of nitrogen gas is confined to a 14.0-L container at 375 torr and 37.0°C. How many moles of nitrogen are in the container?(R = 0.08206 L • atm/K • mol, 1 atm = 760 torr)

▸ 0.272 mol

▸ 2.27 mol

▸ 3.69 mol

▸ 206 mol

▸ 227 mol

Chemistry   nevermind11111   6   mooltipas   4 days ago

A sample of nitrogen gas has the temperature drop from 250.C to 150.C at constant pressure. What is ...

A sample of nitrogen gas has the temperature drop from 250.C to 150.C at constant pressure. What is ...

A sample of nitrogen gas has the temperature drop from 250.°C to 150.°C at constant pressure. What is the final volume if the initial volume is 310. mL?

▸ 0.186 L

▸ 0.251 L

▸ 0.383 L

▸ 0.410 L

▸ 0.517 L

Chemistry   makalisek   6   dangoon   4 days ago

A sample of nitrogen gas has a volume of 32.4 L at 20C. The gas is heated to 220C at constant ...

A sample of nitrogen gas has a volume of 32.4 L at 20C. The gas is heated to 220C at constant ...

A sample of nitrogen gas has a volume of 32.4 L at 20°C. The gas is heated to 220ºC at constant pressure. What is the final volume of the nitrogen gas?

▸ 2.94 L

▸ 19.3 L

▸ 32.4 L

▸ 54.5 L

▸ 356 L

Chemistry   thallium81   6   danterich   4 days ago

A sample of nitrogen gas at 298 K and 745 torr has a volume of 37.42 L. What volume will it occupy ...

A sample of nitrogen gas at 298 K and 745 torr has a volume of 37.42 L. What volume will it occupy ...

A sample of nitrogen gas at 298 K and 745 torr has a volume of 37.42 L. What volume will it occupy if the pressure is increased to 894 torr at constant temperature?

▸ 22.3 L

▸ 31.2 L

▸ 44.9 L

▸ 112 L

▸ 380 L

Chemistry   biokam   6   DNA_Helicase   4 days ago

A sample of N2 gas occupies 2.40 L at 20C. At what temperature will the N2 gas occupy a volume of ...

A sample of N2 gas occupies 2.40 L at 20C. At what temperature will the N2 gas occupy a volume of ...

A sample of N2 gas occupies 2.40 L at 20°C. At what temperature will the N2 gas occupy a volume of 4.80 L at constant pressure?

▸ 10°C

▸ 40°C

▸ 146°C

▸ 313°C

▸ 586°C

Chemistry   deroth   6   shalasha   4 days ago

A sample of hydrogen gas exerts a pressure of 466 torr in a container. What is this pressure in ...

A sample of hydrogen gas exerts a pressure of 466 torr in a container. What is this pressure in ...

A sample of hydrogen gas exerts a pressure of 466 torr in a container. What is this pressure in atmospheres? (1 atm = 1.01325 ×105 Pa = 760 torr)

▸ 0.217 atm

▸ 0.466 atm

▸ 0.613 atm

▸ 1.63 atm

▸ 4.60 atm

Chemistry   kaykay41   6   localbabe10   4 days ago

A sample of gas occupies 24.5 L at a pressure of 1.57 atm. What is the pressure if the volume is ...

A sample of gas occupies 24.5 L at a pressure of 1.57 atm. What is the pressure if the volume is ...

A sample of gas occupies 24.5 L at a pressure of 1.57 atm. What is the pressure if the volume is increased to 48.3 L at constant temperature?

▸ 0.796 atm

▸ 1.26 atm

▸ 3.10 atm

▸ 5.38 × 10–4 atm

▸ 1.86 × 103 atm

Chemistry   futurenurse15   7   sharonfaith31   4 days ago

A sample of carbon dioxide gas at 125C and 248 torr occupies a volume of 275 L. What will the gas ...

A sample of carbon dioxide gas at 125C and 248 torr occupies a volume of 275 L. What will the gas ...

A sample of carbon dioxide gas at 125°C and 248 torr occupies a volume of 275 L. What will the gas pressure be if the volume is increased to 321 L at 125°C?

▸ 212 torr

▸ 289 torr

▸ 356 torr

▸ 441 torr

▸ 359 torr

Chemistry   dkwilson   8   apontea13   4 days ago

A sample of an ideal gas has its volume doubled while its temperature remains constant. If the ...

A sample of an ideal gas has its volume doubled while its temperature remains constant. If the ...

A sample of an ideal gas has its volume doubled while its temperature remains constant. If the original pressure was 100 torr, what is the new pressure?

▸ 10 torr

▸ 50 torr

▸ 100 torr

▸ 200 torr

▸ 1000 torr

Chemistry   KoolinIt   8   starikovs   4 days ago

A sample of a gas occupies 1.40 L at 25C and 760 mmHg. What volume will it occupy at the same ...

A sample of a gas occupies 1.40 L at 25C and 760 mmHg. What volume will it occupy at the same ...

A sample of a gas occupies 1.40 L at 25°C and 760 mmHg. What volume will it occupy at the same temperature and 380 mmHg?

▸ 2.8 L

▸ 2.10 L

▸ 1.40 L

▸ 1.05 L

▸ 0.700 L

Chemistry   squeakykln   6   schmience   4 days ago

A sample of a gas has an initial pressure of 0.987 atm and a volume of 12.8 L. What is the final ...

A sample of a gas has an initial pressure of 0.987 atm and a volume of 12.8 L. What is the final ...

A sample of a gas has an initial pressure of 0.987 atm and a volume of 12.8 L. What is the final pressure if the volume is increased to 25.6 L?

▸ 2.03 atm

▸ 1.97 atm

▸ 0.494 atm

▸ 0.003 atm

▸ 323.4 atm

Chemistry   tbparker   6   romeo_izzy13   4 days ago

A pressure that will support a column of Hg to a height of 256 mm would support a column of water to ...

A pressure that will support a column of Hg to a height of 256 mm would support a column of water to ...

A pressure that will support a column of Hg to a height of 256 mm would support a column of water to what height? The density of mercury is 13.6 g/cm3; the density of water is 1.00 g/cm3.

▸ 348 cm

▸ 1.00 × 102 ft

▸ 18.8 mm

▸ 33.8 ft

▸ 76.0 cm

Chemistry   kwmusick   7   livewelldreambi   4 days ago

A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25-g sample of the gas occupies a ...

A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25-g sample of the gas occupies a ...

[html]A gaseous compound is 30.4% nitrogen and 69.6% oxygen by mass. A 5.25-g sample of the gas occupies a volume of 1.00 L and exerts a pressure of 1.26 atm at –4.0°C. What is its molecular formula?(R = 0.08206 L • atm/K • mol)

▸ NO

▸ NO2

▸ N3O6

▸ N2O4

▸ N2O

Chemistry   sunnisam   6   thevoicexxx   4 days ago