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Which gas has molecules with the greatest average molecular speed at 25C?

Which gas has molecules with the greatest average molecular speed at 25C?

Which gas has molecules with the greatest average molecular speed at 25°C?

▸ CH4

▸ Kr

▸ N2

▸ CO2

▸ Ar

Chemistry   spiderman13   12   carolyne254   4 days ago

Which figure best represents the concept of pressure? (A sphere represents a gaseous atom.)

Which figure best represents the concept of pressure? (A sphere represents a gaseous atom.)

[html]Which figure best represents the concept of pressure? (A sphere represents a gaseous atom.)

▸

Chemistry   laywatdut   13   dorkiexcici   4 days ago

When active metals such as magnesium are immersed in acid solution, hydrogen gas is evolved. ...

When active metals such as magnesium are immersed in acid solution, hydrogen gas is evolved. ...

[html]When active metals such as magnesium are immersed in acid solution, hydrogen gas is evolved. Calculate the volume of H2(g) at 30.1°C and 0.85 atm that can be formed when 275 mL of 0.725 M HCl solution reacts with excess Mg to give hydrogen gas and aqueous magnesium chloride.Mg(s) + 2HCl(aq) → MgCl2(aq) + H2

Chemistry   abdullerz   13   studytime   4 days ago

What volume of CO2 gas at 645 torr and 800. K could be produced by the decomposition of 45.0 g of ...

What volume of CO2 gas at 645 torr and 800. K could be produced by the decomposition of 45.0 g of ...

What volume of CO2 gas at 645 torr and 800. K could be produced by the decomposition of 45.0 g of CaCO3?CaCO3(s) → CaO(s) + CO2(g)(R = 0.08206 L • atm/K • mol)

▸ 0.449 L

▸ 22.4 L

▸ 25.0 L

▸ 34.8 L

▸ 45.7 mL

Chemistry   remmylp   9   Hello32hello3   4 days ago

What volume of chlorine gas at 25C and 0.950 atm can be produced by the reaction of 12.0 g of MnO2 ...

What volume of chlorine gas at 25C and 0.950 atm can be produced by the reaction of 12.0 g of MnO2 ...

[html]What volume of chlorine gas at 25°C and 0.950 atm can be produced by the reaction of 12.0 g of MnO2 in excess HCl(aq)?MnO2(s) + 4HCl(aq) → MnCl2(aq) + 2H2O(l) + Cl2(g)(R = 0.08206 L • atm/K • mol)

▸ 5.36 × 10–3 L

▸ 0.138 L

▸ 0.282 L

Chemistry   denausor   13   moyo966   4 days ago

What mass of KClO3 must be decomposed to produce 126 L of oxygen gas at 133C and 0.880 atm? (The ...

What mass of KClO3 must be decomposed to produce 126 L of oxygen gas at 133C and 0.880 atm? (The ...

What mass of KClO3 must be decomposed to produce 126 L of oxygen gas at 133°C and 0.880 atm? (The other reaction product is solid KCl.)(R = 0.08206 L • atm/K • mol)

▸ 24.6 g

▸ 70.8 g

▸ 272 g

▸ 408 g

▸ 612 g

Chemistry   nurse15   13   Boba155   4 days ago

What is the volume of NH3 produced in the following reaction when 3.0 L of N2 reacts with 4.0 L of ...

What is the volume of NH3 produced in the following reaction when 3.0 L of N2 reacts with 4.0 L of ...

What is the volume of NH3 produced in the following reaction when 3.0 L of N2 reacts with 4.0 L of H2?N2(g) + 3H2(g) → 2NH3(g)

▸ 1.5 L

▸ 2.7 L

▸ 6.0 L

▸ 7.5 L

▸ 12 L

Chemistry   pgakui   18   melswhi1   4 days ago

What is the volume occupied by 35.2 g of methane gas (CH4) at 25C and 1.0 atm?(R = 0.08206 L atm/K mol)

What is the volume occupied by 35.2 g of methane gas (CH4) at 25C and 1.0 atm?(R = 0.08206 L atm/K mol)

What is the volume occupied by 35.2 g of methane gas (CH4) at 25°C and 1.0 atm?(R = 0.08206 L • atm/K • mol)

▸ 0.0186 L

▸ 4.5 L

▸ 11.2 L

▸ 49.2 L

▸ 53.7 L

Chemistry   qwertybio   15   skdiveelis   4 days ago

What is the volume occupied by 25.2 g of CO2 at 0.840 atm and 25C?(R = 0.08206 L atm/K mol)

What is the volume occupied by 25.2 g of CO2 at 0.840 atm and 25C?(R = 0.08206 L atm/K mol)

What is the volume occupied by 25.2 g of CO2 at 0.840 atm and 25°C?(R = 0.08206 L • atm/K • mol)

▸ 0.060 L

▸ 1.34 L

▸ 16.7 L

▸ 24.2 L

▸ 734 L

Chemistry   zitze   13   sagitario81   4 days ago

What is the temperature in Celsius at 77 K, which is the normal boiling point of liquid nitrogen?

What is the temperature in Celsius at 77 K, which is the normal boiling point of liquid nitrogen?

What is the temperature in Celsius at 77 K, which is the normal boiling point of liquid nitrogen?

▸ –350°C

▸ –196°C

▸ 350°C

▸ 196°C

▸ 3.55°C

Chemistry   zbuild007   13   astroasis   4 days ago

What is the temperature in Celsius at 4 K, which is the normal boiling point of liquid helium?

What is the temperature in Celsius at 4 K, which is the normal boiling point of liquid helium?

What is the temperature in Celsius at 4 K, which is the normal boiling point of liquid helium?

▸ –269°C

▸ 269°C

▸ 277°C

▸ 68.3°C

▸ –277°C

Chemistry   sharonfaith30   14   itnow96   4 days ago

What is the pressure in atmospheres exerted by a column of water that is 12.5 m high?(density of ...

What is the pressure in atmospheres exerted by a column of water that is 12.5 m high?(density of ...

What is the pressure in atmospheres exerted by a column of water that is 12.5 m high?(density of water = 1.00g/cm3; gravitational constant = 9.80665 m/s2, 1 atm = 101,325 Pa = 760 torr = 760 mmHg)

▸ 123 atm

▸ 1.23 × 105 atm

▸ 0.785 atm

▸ 1.21 atm

▸ 1.23 × 10–3 atm

Chemistry   islandgurl   14   ttoe81   4 days ago

What is the pressure in atmospheres exerted by a column of mercury that is 100. m high?(density of ...

What is the pressure in atmospheres exerted by a column of mercury that is 100. m high?(density of ...

What is the pressure in atmospheres exerted by a column of mercury that is 100. m high?(density of mercury = 13.5951 g/cm3, gravitational constant = 9.80665 m/s2, 1 atm = 101,325 Pa = 760 torr = 760 mmHg)

▸ 1.4 × 1010 atm

▸ 0.013 atm

▸ 0.73 atm

▸ 1.37 atm

▸ 132 atm

Chemistry   daogrady   19   PWT82   4 days ago

What is the molar mass of an unknown gas if a sample weighing 0.389 g is collected in a flask with a ...

What is the molar mass of an unknown gas if a sample weighing 0.389 g is collected in a flask with a ...

What is the molar mass of an unknown gas if a sample weighing 0.389 g is collected in a flask with a volume of 102 cm3 at 97°C and at a pressure of 728 mmHg?(R = 0.08206 L • atm/K • mol, 1 atm = 760 mmHg).

▸ 187 g/mol

▸ 121 g/mol

▸ 112 g/mol

▸ 31.6 g/mol

▸ 8.28 × 10–3 g/mol

Chemistry   Bpringle2000   17   sportzchik15   4 days ago

What is the mass, in grams, of 2.74 L of CO gas measured at 33C and 945 mmHg?(R = 0.08206 L atm/mol ...

What is the mass, in grams, of 2.74 L of CO gas measured at 33C and 945 mmHg?(R = 0.08206 L atm/mol ...

What is the mass, in grams, of 2.74 L of CO gas measured at 33°C and 945 mmHg?(R = 0.08206 L • atm/mol • K, 1 atm = 760 mmHg)

▸ 0.263 g

▸ 2.46 g

▸ 3.80 g

▸ 35.2 g

▸ 206 g

Chemistry   anthonyaooo   17   angelofavarice   4 days ago

What is the Kelvin temperature at 24C?

What is the Kelvin temperature at 24C?

What is the Kelvin temperature at 24°C?

▸ 249 K

▸ 11.4 K

▸ –297 K

▸ –249 K

▸ 297 K

Chemistry   remmylp   10   xueli   4 days ago

What is the initial pressure of a gas having an initial temperature of 905 K, an initial volume of ...

What is the initial pressure of a gas having an initial temperature of 905 K, an initial volume of ...

What is the initial pressure of a gas having an initial temperature of 905 K, an initial volume of 14.3 L, a final pressure of 0.83 atm, a final temperature of 154 K and a final volume of 2.7 L?

▸ 26 atm

▸ 0.27 atm

▸ 0.75 atm

▸ 1.3 atm

▸ 0. 92 atm

Chemistry   Noar   13   JRAD814   4 days ago

What is the formula that describes the relationship between the volume and number of moles in the ...

What is the formula that describes the relationship between the volume and number of moles in the ...

[html]What is the formula that describes the relationship between the volume and number of moles in the sample at constant pressure and constant temperature?

▸ Vn = k3

▸ V2 /n = k3

▸ n/V2 = k3

▸ V/n = k3

▸

Chemistry   adnan_buljic   11   DNA_Helicase   4 days ago

What is the formula that describes the relationship between the volume and temperature at constant ...

What is the formula that describes the relationship between the volume and temperature at constant ...

[html]What is the formula that describes the relationship between the volume and temperature at constant pressure and constant number of moles?

▸ VT = k2

▸ V2/T = k2

▸ V = k2T

▸ k2VT = 0

▸ V = –k2

Chemistry   jared8mp   7   yoorimchi   4 days ago

What is the formula that describes the relationship between the pressure, volume, temperature, and moles?

What is the formula that describes the relationship between the pressure, volume, temperature, and moles?

[html]What is the formula that describes the relationship between the pressure, volume, temperature, and moles?

▸

Chemistry   fatsoulmh   12   catdaster   4 days ago

What is the formula that describes the relationship between the pressure and volume at constant ...

What is the formula that describes the relationship between the pressure and volume at constant ...

[html]What is the formula that describes the relationship between the pressure and volume at constant temperature and constant number of moles?

▸ PV = k1

▸ V/P = k1

▸ P/V = k1

▸ k1P = V

▸ P = –k1V

Chemistry   schweet   10   Hlh13   4 days ago

What is the final temperature of a gas that expands from a volume of 22.4 L at 278 K to a volume of ...

What is the final temperature of a gas that expands from a volume of 22.4 L at 278 K to a volume of ...

What is the final temperature of a gas that expands from a volume of 22.4 L at 278 K to a volume of 38.3 L?

▸ 163 K

▸ 294 K

▸ 3.09 K

▸ 217 K

▸ 475 K

Chemistry   Anthonyling   11   dmp7474   4 days ago

What is the density of SF6(g) at 27C and 0.500 atm pressure?(R = 0.08206 L atm/K mol)

What is the density of SF6(g) at 27C and 0.500 atm pressure?(R = 0.08206 L atm/K mol)

What is the density of SF6(g) at 27°C and 0.500 atm pressure?(R = 0.08206 L • atm/K • mol)

▸ 3.38 × 10–3 g/L

▸ 2.97 g/L

▸ 22.4 g/L

▸ 32.9 g/L

▸ 3.38 kg/L

Chemistry   Melly767   12   rick32   4 days ago

What is the density of CO2(g) at 100.C and 10.0 atm pressure?(R = 0.08206 L atm/K mol)

What is the density of CO2(g) at 100.C and 10.0 atm pressure?(R = 0.08206 L atm/K mol)

What is the density of CO2(g) at 100.°C and 10.0 atm pressure?(R = 0.08206 L • atm/K • mol)

▸ 1.44 g/L

▸ 134 g/L

▸ 44.0 g/L

▸ 53.6 g/L

▸ 14.4 g/L

Chemistry   mitch44   6   jamiecro   4 days ago

What is the density of carbon dioxide gas at 25.2C and 98.0 kPa? ( R = 0.08206 L atm/K mol, 1 atm ...

What is the density of carbon dioxide gas at 25.2C and 98.0 kPa? ( R = 0.08206 L atm/K mol, 1 atm ...

What is the density of carbon dioxide gas at –25.2°C and 98.0 kPa? ( R = 0.08206 L • atm/K • mol, 1 atm = 101,325 Pa)

▸ 0.232 g/L

▸ 0.279 g/L

▸ 0.994 g/L

▸ 1.74 g/L

▸ 2.09 g/L

Chemistry   drw92   3   durandal   4 days ago

What is the density of Ar(g) at 11C and 675 mmHg?(R = 0.08206 L atm/K mol, 1 atm = 760 mmHg)

What is the density of Ar(g) at 11C and 675 mmHg?(R = 0.08206 L atm/K mol, 1 atm = 760 mmHg)

What is the density of Ar(g) at –11°C and 675 mmHg?(R = 0.08206 L • atm/K • mol, 1 atm = 760 mmHg)

▸ 1.52 g/L

▸ 1.65 g/L

▸ –39.3 g/L

▸ 40.0 g/L

▸ 1.25 kg/L

Chemistry   lythong266   4   apina   4 days ago

What are the units of the constant b in the van der Waals equation?

What are the units of the constant b in the van der Waals equation?

What are the units of the constant b in the van der Waals equation?

▸ L/mol

▸ L

▸ L • atm/K • mol

▸ L2• atm/mol2

Chemistry   zitze   2   rainbow12   4 days ago

What are the units of the constant a in the van der Waals equation?

What are the units of the constant a in the van der Waals equation?

What are the units of the constant a in the van der Waals equation?

▸ L/mol

▸ atm

▸ L • atm/K • mol

▸ L2• atm/mol2

Chemistry   JadeDeLair   1   Hollywood1971   4 days ago

What are the conditions of STP?

What are the conditions of STP?

What are the conditions of STP?

▸ 0 K and 1 atm

▸ 273.15 K and 760 torr

▸ 0°C and 760 atm

▸ 273.15°C and 760 torr

▸ 0°C and 1 torr

Chemistry   mylesnagop   1   shalasha   4 days ago

The temperature of the carbon dioxide atmosphere near the surface of Venus is 475C. Calculate the ...

The temperature of the carbon dioxide atmosphere near the surface of Venus is 475C. Calculate the ...

The temperature of the carbon dioxide atmosphere near the surface of Venus is 475°C. Calculate the average kinetic energy per mole of carbon dioxide molecules on Venus.

▸ 2520 J/mol

▸ 4150 J/mol

▸ 5920 J/mol

▸ 9330 J/mol

▸ 5920 kJ/mol

Chemistry   daogrady   0   isababycookie   4 days ago

The pressure of sulfur dioxide in a container is 159 kPa. What is this pressure in atmospheres? (1 ...

The pressure of sulfur dioxide in a container is 159 kPa. What is this pressure in atmospheres? (1 ...

The pressure of sulfur dioxide in a container is 159 kPa. What is this pressure in atmospheres? (1 atm = 101,325 Pa = 760 torr)?

▸ 0.209 atm

▸ 0.637 atm

▸ 1.57 atm

▸ 21.2 atm

▸ 1.59 ×104 atm

Chemistry   wasala18   2   Kmc14   4 days ago

The pressure of hydrogen sulfide gas in a container is 3.565 104 Pa. What is this pressure in torr? ...

The pressure of hydrogen sulfide gas in a container is 3.565 104 Pa. What is this pressure in torr? ...

The pressure of hydrogen sulfide gas in a container is 3.565 ×104 Pa. What is this pressure in torr? (1 atm = 101,325 Pa = 760 torr)?

▸ 46.91 torr

▸ 267.4 torr

▸ 351.8 torr

▸ 3612 torr

▸ 2.709 ×104 torr

Chemistry   marmech12   1   bolusmachine   4 days ago

The molecules of different samples of an ideal gas have the same average kinetic energies at the ...

The molecules of different samples of an ideal gas have the same average kinetic energies at the ...

The molecules of different samples of an ideal gas have the same average kinetic energies at the same ________.

▸ pressure

▸ temperature

▸ volume

▸ density

Chemistry   wallyboy   0   naderaide   4 days ago

The mole fraction of oxygen molecules in dry air is 0.2095. What volume of dry air at 1.00 atm and ...

The mole fraction of oxygen molecules in dry air is 0.2095. What volume of dry air at 1.00 atm and ...

The mole fraction of oxygen molecules in dry air is 0.2095. What volume of dry air at 1.00 atm and 25°C is required for burning completely 1.00 L of octane (C8H18, density = 0.7025 g/mL), yielding carbon dioxide and water?(R = 0.08206 L • atm/K • mol)

▸ 394 L

▸ 1880 L

▸ 8220 L

▸ 8970 L

▸ 17,900 L

Chemistry   saratoga 22   0   jewelzzP   4 days ago

The catalytic decomposition of hydrogen peroxide yields oxygen gas and water. In an experiment, ...

The catalytic decomposition of hydrogen peroxide yields oxygen gas and water. In an experiment, ...

[html]The catalytic decomposition of hydrogen peroxide yields oxygen gas and water. In an experiment, decomposition of hydrogen peroxide yielded 75.3 mL of gas collected over water at 25°C and 742 torr. What mass of oxygen gas was collected?(Pwater = 24 torr at 25°C, R = 0.08206 L • atm/K • mol)

▸ 0.00291 g

▸ 0.0931 g

▸ 0.0962 g

▸ 0.0993 g

Chemistry   JSmith1   0   channy40   4 days ago

The air pressure in a volleyball is 75 psi. What is this pressure in torr? (1 atm = 14.7 psi = ...

The air pressure in a volleyball is 75 psi. What is this pressure in torr? (1 atm = 14.7 psi = ...

The air pressure in a volleyball is 75 psi. What is this pressure in torr? (1 atm = 14.7 psi = 101,325 Pa = 760 torr)?

▸ 520 torr

▸ 562 torr

▸ 3900 torr

▸ 7600 torr

▸ 75,000 torr

Chemistry   katieleex0x   0   daoneandonly300   4 days ago

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   0   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   0   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   1   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   0   malgrextout   4 days ago