When calculating a ratio for the mean speeds, does the ratio change with temperature?

Q: How many moles of gas is present if at 400K, its pressure is 1Mpa(1000kpa), and its volume is 5m3?

A: We have given that Temperature of gas = T = 400K Pressure = P = 1000 kPa Volume = 5 m3 = 5000 L…

Q: The normal maximum pressure exertedeby a human heart 120. torr.  Calculate the normal maximun…

A: Given, Pressure = 120 torr

Q: which gas, helium or argon, effuses faster under the same conditions and by how much?

A: As per Graham's Law of effusion/diffusion, rate of effusion/diffusion is inversely proportional to…

Q: 2. A sample of He gas effused 5.3 times faster than an unknown gas, under the same conditions.…

A: Given: The Helium gas with atomic  mass of = 4 u.

Q: Calculate the molar mass of a gas X2 if equal volumes of X2 and hydrogen gas take 9.12 and  1.20…

A: Given that equal volume of gases X2 and H2 effuse into a vacuum through a small hole under the same…

Q: Nitrogen gas occupies a volume of 1.87 x 102 mL, at 27 oC, and 0.89 atm of pressure.  How much…

A: Formula: P1 V1 = P2 V2

Q: Calculate the rms speeds of N2 molecules at 25°C and at 125°C. Sketch approximate curves of the…

A: Given data, T1 = 25°C = 298K T2 = 125°C = 398K To calculate the rms speed of N2 molecule.  Sketch…

Q: At 30oC, a gas cylinder containing nitrogen has an internal volume and pressure of 58.5 L and 1.75 *…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: A given mass of air has a volume of 6.00 L at 101 kPa. What volume will it occupy at 25.0 kPa if he…

A: In this question, we want to determine the volume of the gas at 25.0kPa pressure and also give the…

Q: The density of a gas at STP is found to be 2.8 g/L. What is the formula of the gas?

A: Concept:  As we know that density is defined by ratio of mass to the valume. Density = molar mass/…

Q: . In a hospital an oxygen cylinder contains 423 L of pure oxygen at a pressure of 136 atm. What is…

A: In this question, we will determine the volume of oxygen gas at 1.00atm when temperature and number…

Q: A bicycle tire is filled to a pressure of 110. psi at a temperature of 30.0oC. At what temperature…

A: Given : P1 = 110 psi P2 = 105 psi T1 = 30.0°C

Q: Particles of different masses have the same average speed at a given temperature T or F?

A: Welcome to bartleby !  We have to tell whether the statement is correct or not .

Q: How can we calculate the root Mean Square Velocity of gases?

A: Gases are highly compressible having weak intermolecular forces in between them.

Q: How can a unit of length such as millimeter of mercury (mmHg) be used as a unit of pressure, which…

A: The given statement has to be explained.

Q: Calculate the density of air at 1.00 atm and 302K. Assume that air has an average of molecular…

A: We can determine the density of air using ideal gas equation

Q: Which of the following gases will have the greatest velocity at the same specified temperature and…

A:

Q: Two gases effuse through a hole. If Gas A has 16 times the molecular mass of gas 8, what is the…

A: Using graham's law of diffusion of gases we can solve this problem.

Q: a rate of effusion th

A:

Q: Describe how mass and temperatureaffect the distribution of molecular speedsof gases

A: Gas is the state of matter where the molecules are loosely held with each other.The molecules move…

Q: A sample of helium gas occupies a volume of 107.2 L at 247.5 K and 7.64 atm.  What will its pressure…

A:

Q: An underwater research station with a volume of 2.00x107 L needs a delivery of air that completely…

A:

Q: Under what temperature condition (or ratio of temperatures) will a sample of gas have the same value…

A: we know  Average speed (Vav) = 8RT/πM  where R= gas constant  T= Temperature in kelvin M= Molar mass…

Q: The ratio of the mean speeds for H2 molecules to Ar atoms at 20°C is 2√5 : 1 The expected ratio in…

A: it is square root of mean velocity square of all molecule.

Q: Carbon dioxide molecules have an average speed of 25.0 m/s at a given temperature and pressure. What…

A: The given data contains, Average speed of CO2 = 25 m/s.

Q: Calculate the density of propane gas at 780 torr and 40 0C.

A: Ideal gas law states that the product of volume (L) and pressure (atm) is equal to the product of…

Q: 0.601 L of gas at 760. torr is compressed to 800. torr. Calculate the resulting gas volume in mLat…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant T =…

Q: Determine the ratio of the mean speeds for H2 molecules to Ar atoms at 20°C.

A: The two gases are given H2 and Ar. Temperature of each gas is T = 20°C

Q: How does the density of a gas depend on temperature? Pressure? How does it depend on the molar mass…

A: The molar mass of a substance (M) is characterized as the number of grams (m) per mole (n) of that…

Q: Determine the ratios of (a) the mean speeds, (b) the mean kinetic energies of H2 molecules and Hg…

A:

Q: the time required for given volume of Nitogen molecule to duffuse through an orifice is 35 seconds.…

A: Use concept of grams law of diffusion t2/t1=M.w2/M.w1 And get the answer.

Q: What is the average speed for carbon monoxide molecules at the same temperature and pressure ?

A: Average speed of a gas can be calculated by using the following formula.    Since the value of…

Q: 1L of a gas at STP weighs 1.97g. What is molecular mass?

A:

Q: Calculate the average molar mass of dry air if it has a densityof 1.17 g/L at 21 °C and 740.0 torr.

A: Since the relationship between pressure density and temperature is as shown below. PM = dRT where P…

Q: is the ratio of the rate of effusion of Helium and Neon

A: Since u have posted multiple question. we will solve the first question for u. To get the remaining…

Q: Maxwell distribution of speeds

A: a gas of many molecules has a predictable distribution of molecular speeds, known as the…

Q: Calculate the density of NO2 gas at 0.970 atm and 35C.

A: Using the ideal gas equation, the density of given NO2 is determined.

Q: at what temperature in kelvin will 25.25 moles of Xe occupy a volume of 645 L at a pressure of 732…

A: This problem is based on the ideal gas equation which is shown as below- pv=nRT

Q: Calculate the root mean squared velocity of Helium at 75 degrees C, in meters per second.

A: Given: Temperature = 75 oC And the gas is helium.

Q: Ojos del Salado in Chile is the highest active volcano in the world at 6,893 m above sea level. Near…

A: Corresponding pressure will be = 28.371 kPa

Q: What is the rms speed of carbon tetrachloride molecules at 25.00C?

A:

Q: What is the ratio of rates of effusion of oxygen and hydrogen gas? (Both gases and exposed to the…

A: According to Graham’s law, if a mixture contains two gases, then the rate of effusion at constant…

Q: At x ºC will H2O molecules have the same average speed as N2 atoms at 262ºC. What is the value of x?

A: At x ºC will H2O molecules have the same average speed as N2 atomat 262ºCtemperature of N2 =262ºC…

Q: Determine the rate of effusion of the densest gas known, uf6 to that of the lightest gas hidrogen

A: The movement of the molecules of liquids or gases from higher concentration to lower concentration…

Q: A sample of oxygen gas has a volume of 3.24 L at 31°C. What volume will it occupy at 147°F if the…

A:

Q: For O2 at 1 atm and 298 K, what fraction of molecules has a speed that is greater than vmp?

A:

Q: In a sample of Ar gas at 298.15K, what fraction of the Ar atoms have a speed between 600 and 1500…

A:

Q: A molecule of oxygen gas has an average speed of 15.6 m/s at a given temp and pressure. What is the…

A: Recall the expression of average speed             Cav=8RTπMwhere, R is molar gas constant,T is…

Kinetic-Theory of Gases

Kinetic theory of gases is the model or method which was developed in the 19th century by Maxwell and Boltzmann. This is possible as the interatomic force which is of short-range forces that are important for solids and liquids can be neglected for gases. This theory or gas law gives a molecular interpretation of the pressure and temperature of a gas and is consistent with gas laws and Avogadro’s hypothesis. This theory is very helpful to correctly explain the specific heat capacities of many gases, kinetic energy and it also explains the transport qualities such as viscosity, thermal conductivity, and diffusion with molecular parameters. As stated in the kinetic-molecular theory, the temperature of a substance or gas particle is related to the average kinetic energy of the particles of that substance. When a substance is heated, some of the absorbed energy is stored within the particles, while some of the energy increases the motion of the particles, called average kinetic energy.